Create a Total and then all records can use that Total in calculations

[#1]

I have a list vendors, and they want to show the % represented of that vendor to Total Count.  So the calculation is (Vendor Sum)/(Total Vendors Sum).

How can I show this for each row (for the vendor)?

[whiteline]

If you have only one dimension just use this expression:

=Sum(Vendor)/Sum(total Vendor)

Then go to the Number tab and select Show in Percent checkbox.

[#3]

Here is a sample.