Add NPS Score in Salesforce reports and -dashboards
Create relevant Objects
Start by adding below fields to the Object "NPS Response" with the below formulas:
Is Detractor:
IF( ISPICKVAL(npstoday__RatingGroup__c, "-1"), 1, 0)
Is Promoter:
IF( ISPICKVAL(npstoday__RatingGroup__c, "1"), 1, 0)

I these formula “1” and “-1” is referring to the API name of the “Rating Group”.
Set up your report
In the report add the new fields in “Columns”
Now create a “Summary Formula”
Use this formula to calculate the NPS Score:
npstoday__Response__c.IsPromoter__c:SUM / RowCount * 100
-
npstoday__Response__c.IsDetractor__c:SUM / RowCount * 100

Now create the dashboard that you want: