exporting Tables and Pivot Tables that have been modified by a script

I'm having the same issue. I just want the ability to build a percent difference between two pivoted columns. I'm guessing that you are trying to do something similar. I've been using JS to do this, but a client wants to export to excel. If Javascript doesn't load while exporting to Excel is there a Sisense function built in that could be used to pull in two different values from different columns to make calculations?