diff --git a/module/chart/js/common.js b/module/chart/js/common.js
index 715932d691..0f258b38b7 100644
--- a/module/chart/js/common.js
+++ b/module/chart/js/common.js
@@ -17,6 +17,12 @@ function ajaxGetChart(check = true, chart = DataStorage.chart, echart = window.e
         var data = JSON.parse(resp);
         if(echart)
         {
+            if(chartParams.settings[0].type == 'waterpolo')
+            {
+                data.series[0].label.formatter = function(params) { return (params.value * 100).toFixed(2) + '%';};
+                data.tooltip.formatter         = function(params) { return (params.value * 100).toFixed(2) + '%';};
+            }
+
             echart.resize();
             echart.clear();
             echart.setOption(data, true);
diff --git a/module/chart/model.php b/module/chart/model.php
index f585c3f418..ec3412b2e1 100644
--- a/module/chart/model.php
+++ b/module/chart/model.php
@@ -620,9 +620,9 @@ class chartModel extends model
         $molecule    = $this->dao->query($moleculeSQL)->fetch();
         $denominator = $this->dao->query($denominatorSQL)->fetch();
 
-        $percent = round($molecule->count / $denominator->count, 2);
+        $percent = round($molecule->count / $denominator->count, 4);
 
-        $series  = array(array('type' => 'liquidFill', 'data' => array($percent), 'outline' => array('show' => false), 'label' => array('fontSize' => 30)));
+        $series  = array(array('type' => 'liquidFill', 'data' => array($percent), 'outline' => array('show' => false), 'label' => array('fontSize' => 26)));
         $tooltip = array('show' => true);
         $options = array('series' => $series, 'tooltip' => $tooltip);