diff --git a/module/report/js/projectdeviation.js b/module/report/js/projectdeviation.js
index 2d979b1d73..a1d18cc556 100644
--- a/module/report/js/projectdeviation.js
+++ b/module/report/js/projectdeviation.js
@@ -1,6 +1,12 @@
 $(document).ready(function()
 {
     initChart();
+
+    $('.icon-exclamation-sign').hover(function(){
+        $('#desc').removeClass('hidden');
+    }, function(){
+        $('#desc').addClass('hidden');
+    });
 });
 
 function changeDate(begin, end)
diff --git a/module/report/lang/de.php b/module/report/lang/de.php
index 7caec42dfa..3507740aa2 100644
--- a/module/report/lang/de.php
+++ b/module/report/lang/de.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " Aufgaben (%s),";
 $lang->report->mailTitle->todo     = " Todo (%s),";
 $lang->report->mailTitle->testTask = " Test Aufgaben (%s),";
 
+$lang->report->reportDesc   = 'According to the Closed Execution Deviation Rate = ((Total Cost - Total Estimate) / Total Estimate), the Deviation Rate is n/a when the Total Estimate is 0.';
 $lang->report->proVersion   = '<a href="http://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">Testen Sie ZenTao Pro für mehr Informationen!</a>';
 $lang->report->proVersionEn = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Testen Sie ZenTao Pro für mehr Informationen!</a>';
 
diff --git a/module/report/lang/en.php b/module/report/lang/en.php
index ae1566eefb..878d07ab28 100644
--- a/module/report/lang/en.php
+++ b/module/report/lang/en.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " Task (%s),";
 $lang->report->mailTitle->todo     = " Todo (%s),";
 $lang->report->mailTitle->testTask = " Request (%s),";
 
+$lang->report->reportDesc   = 'According to the Closed Execution Deviation Rate = ((Total Cost - Total Estimate) / Total Estimate), the Deviation Rate is n/a when the Total Estimate is 0.';
 $lang->report->proVersion   = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
 $lang->report->proVersionEn = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
 
diff --git a/module/report/lang/fr.php b/module/report/lang/fr.php
index f7731d193b..8d748aa659 100644
--- a/module/report/lang/fr.php
+++ b/module/report/lang/fr.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " Tâches (%s),";
 $lang->report->mailTitle->todo     = " Agenda (%s),";
 $lang->report->mailTitle->testTask = " Recettes (%s),";
 
+$lang->report->reportDesc   = 'According to the Closed Execution Deviation Rate = ((Total Cost - Total Estimate) / Total Estimate), the Deviation Rate is n/a when the Total Estimate is 0.';
 $lang->report->proVersion   = '<a href="https://www.zentao.pm/page/vs.html" target="_blank">Essayez ZenTao Pro pour en savoir plus !</a>';
 $lang->report->proVersionEn = '<a href="https://www.zentao.pm/page/vs.html" target="_blank">Try ZenTao Pro for more!</a>';
 
diff --git a/module/report/lang/vi.php b/module/report/lang/vi.php
index 3a431a8172..a4e0b3c94a 100644
--- a/module/report/lang/vi.php
+++ b/module/report/lang/vi.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " %s) nhiệm vụ,";
 $lang->report->mailTitle->todo     = " (%s) việc,";
 $lang->report->mailTitle->testTask = " (%s) yêu cầu,";
 
+$lang->report->reportDesc   = 'According to the Closed Execution Deviation Rate = ((Total Cost - Total Estimate) / Total Estimate), the Deviation Rate is n/a when the Total Estimate is 0.';
 $lang->report->proVersion   = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">Hãy thử ZenTao Pro để biết thêm!</a>';
 $lang->report->proVersionEn = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Hãy thử ZenTao Pro để biết thêm!</a>';
 
diff --git a/module/report/lang/zh-cn.php b/module/report/lang/zh-cn.php
index 5e8a9c9ec4..c1df1f0408 100644
--- a/module/report/lang/zh-cn.php
+++ b/module/report/lang/zh-cn.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " 任务(%s),";
 $lang->report->mailTitle->todo     = " 待办(%s),";
 $lang->report->mailTitle->testTask = " 测试版本(%s),";
 
+$lang->report->reportDesc   = '按照已关闭执行统计偏差率（偏差率 = (总消耗 - 总预计) / 总预计），总预计为0时偏差率为n/a。';
 $lang->report->proVersion   = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">更多精彩，尽在专业版！</a>';
 $lang->report->proVersionEn = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
 
diff --git a/module/report/lang/zh-tw.php b/module/report/lang/zh-tw.php
index 31573dca7b..10c85fe91f 100644
--- a/module/report/lang/zh-tw.php
+++ b/module/report/lang/zh-tw.php
@@ -107,6 +107,7 @@ $lang->report->mailTitle->task     = " 任務(%s),";
 $lang->report->mailTitle->todo     = " 待辦(%s),";
 $lang->report->mailTitle->testTask = " 測試版本(%s),";
 
+$lang->report->reportDesc   = '按照已關閉執行統計偏差率（偏差率 = (總消耗 - 總預計) / 總預計），總預計為0時偏差率為n/a。';
 $lang->report->proVersion   = '<a href="https://api.zentao.net/goto.php?item=proversion&from=reportpage" target="_blank">更多精彩，盡在專業版！</a>';
 $lang->report->proVersionEn = '<a href="http://api.zentao.pm/goto.php?item=proversion&from=reportpage" target="_blank">Try ZenTao Pro for more!</a>';
 
diff --git a/module/report/view/projectdeviation.html.php b/module/report/view/projectdeviation.html.php
index 54002b4f3a..a062d754ef 100644
--- a/module/report/view/projectdeviation.html.php
+++ b/module/report/view/projectdeviation.html.php
@@ -37,7 +37,11 @@
     <div class='cell'>
       <div class='panel'>
         <div class="panel-heading">
-          <div class="panel-title"><?php echo $title;?></div>
+          <div class="panel-title">
+            <?php echo $title;?>
+            <i class="icon icon-exclamation-sign icon-rotate-180"></i>
+            <span class="hidden" id="desc"><?php echo $lang->report->reportDesc;?></span>
+          </div>
           <nav class="panel-actions btn-toolbar"></nav>
         </div>
         <div data-ride='table'>
@@ -59,9 +63,9 @@
                 <td><?php echo $id;?></td>
                 <td class="text-left" title="<?php echo $execution->projectName;?>"><?php echo $execution->projectName;?></td>
                 <td class="text-left" title="<?php echo $execution->name;?>"><?php echo html::a($this->createLink('execution', 'view', "executionID=$id"), $execution->name);?></td>
-                <td><?php echo $execution->estimate;?></td>
-                <td><?php echo $execution->consumed;?></td>
-                <?php $deviation = $execution->consumed - $execution->estimate;?>
+                <td><?php echo round($execution->estimate, 2);?></td>
+                <td><?php echo round($execution->consumed, 2);?></td>
+                <?php $deviation = round($execution->consumed - $execution->estimate, 2);?>
                 <td class="deviation">
                 <?php
                     if($deviation > 0)