Formula to get difference of sales between 2 date range dynamically

[Max]

Yes I would use two parameters.

I would reference this post as I think you should be able to accomplish what you are looking for with a couple of these calculated fields.

Period Over Period and Other Date Comparison Calculations (YoY, MoM, YTD, Rolling 90 days, etc)

Often you may want to create tables and other visuals which display multiple fields that are all ‘filtered’ to different date periods, as well as period-over-period fields. However we can’t use normal filters for this since filters get applied to all fields in the visual. Conceptually in this solution we are building the filters directly into the calculated field itself (using the ifelse logic), so that each field can have a different ‘filtered’ time period. You can then do whatever math you wan…

periodOverPeriodDifference - Amazon QuickSight