Group Count as a % of Total Records

[RevItUp]

I'm doing running totals of groups and would like to display the percent of the total number of records for each group:
group 1 30 15%
group 2 100 50%
group 3 70 35%
---
Ttl recs 200

How do I do the calculation to get the percentages.

Thank you in advance for your help.

 

[RevItUp]

Nevermind - I found how perform this function via the Insert Summary function.