<apex:page standardcontroller="NPS_Survey__c" extensions="NPSSurveyController">
<base target="_top" />
   <apex:form >
        <table width="100%">
            <tr>
               <td><strong>Follow-Ups by Type</strong></td>
               <td><strong>Follow-Ups | No Answer</strong></td>
              </tr>
            <tr>
               <td>
<analytics:reportChart reportId="00O13000008TyVK" size="small" showRefreshButton="true" filter="{column:'NPS_Follow_Up__c.Survey_ID__c', operator:'equals', value:'{!Id}'}" hideOnError="false" > </analytics:reportChart>
               </td>
               <td>
<analytics:reportChart reportId="00O13000008TyVP" size="small"  showRefreshButton="true" filter="{column:'NPS_Follow_Up__c.Survey_ID__c', operator:'equals', value:'{!Id}'}" hideOnError="false" > </analytics:reportChart>
               </td>
              </tr>
              </table>
</apex:form>
</apex:page>