I think Tableau can do, but could you share your packaged workbook for us to understand the data, Grouping and formula structure?
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You should be able to use a Quick Table calculation for this. Try dragging your Months into columns, Revenue into rows and, drag your Grouping onto the Color under Marks. Click on the Continuous Line graph option. Tableau will default to setting you Revenue to SUM. Right click in the Revenue pill that is now on your rows, then go down to Quick Table Calculation > Difference. This will change your view; again right click on the Revenue pill > Compute Using > Grouping. It will change your view once again, you can right click once more on Revenue > Relative To > for a bit more customization.
Hope that helps!
Thank you Kevin!