Changing suffix of template in after effects
The text labels are all controlled by a simple expression that takes the value of a slider, converts it to an integer and adds the letter &quot;K&quot; at the end. Even without programming skills you can see where the &quot;k&quot; part happens (but I put in some magic sparkles to give you a hint). Simply replace the letter &quot;K&quot; with &quot;%&quot; and you're golden.

I wrote a script that finds and replaces text in expressions. You can get it here. I'd suggest if you use it that you search and replace the whole line (x + &quot;K&quot;), as just replacing the letter k with % may ma%e other expressions stop wor%ing.
Also, I hope that the project you linked is just a dummy project. I doubt the client would be happy with you posting details of their presentation on the public internet without their approval. At the least it could get you fired.