Board Thread:Support Requests - Getting Technical/@comment-25956839-20151111182657

I'm working on a calculation to help the entry of data in a table, I'm new to coding, after much research and trial and errors I managed to get this calculation to work:

The problem I'm having is formatting the number with a comma separator, for example, if is 10,050 the formula takes the 50 off and retunes 25%:

Gives:

It's nearly there, I want to display the number with a comma separator: 2,500

The background for this project is here: w:c:rr3:Thread:43243

I'm a new Admin on the rr3 wiki and am new to coding, thanks in advance for your help. 