diff --git a/display.py b/display.py
index e70a8af..6be75df 100644
--- a/display.py
+++ b/display.py
@@ -102,6 +102,21 @@ class DisplayHTMLBlockTable(DisplayHTMLBlock):
         self.rows.append(listToStr(row))
         self.rows_cssclasses.append([u''] * len(row))
 
+    def insertCol(self, col_number, col_title='', col_css_class=''):
+        self.cols.insert(col_number, col_title)
+        for r in self.rows:
+            r.insert(col_number, u'')
+        for r in self.rows_cssclasses:
+            v = r[0]
+            # If all cells have the same CSS class, set it
+            for cur_value in r:
+                if v != cur_value:
+                    v = None
+                    break
+            v = v or u''
+            r.insert(col_number, v)
+        self.cols_cssclasses.insert(col_number, col_css_class)
+
     def getNbRows(self):
         return len(self.rows)
 
@@ -160,6 +175,20 @@ class DisplayHTMLBlockTable(DisplayHTMLBlock):
 
         self.cols_cssclasses = listToStr(values)
 
+    def computeRatio(self, column, column_insertion=None):
+        if column_insertion is None:
+            column_insertion = column+1
+
+        total = 0
+        for r in self.rows:
+            if r[column]:
+                total += int(r[column])
+
+        self.insertCol(column_insertion, self.iwla._('Ratio'), u'iwla_hit')
+        for (index, r) in enumerate(self.rows):
+            val = r[column] and int(r[column]) or 0
+            self.setCellValue(index, column_insertion, '%.1f%%' % (float(val*100)/float(total)))
+
     def _buildHTML(self):
         style = u''
         if self.table_css: style = u' class="%s"' % (self.table_css)
diff --git a/plugins/display/browsers.py b/plugins/display/browsers.py
index 767b568..e82641a 100644
--- a/plugins/display/browsers.py
+++ b/plugins/display/browsers.py
@@ -128,4 +128,5 @@ class IWLADisplayBrowsers(IPlugin):
             total_browsers[1] = self.iwla._(u'Others')
             table.appendRow(total_browsers)
             table.setCellCSSClass(table.getNbRows()-1, 0, 'iwla_others')
+        table.computeRatio(2)
         index.appendBlock(table)