Year Over Year Donor Comparisons -- Help Me Build Something Pretty

Hey TAFFY team!

I've been trying to build a widget in Analytics which would give me a really straightforward count of donors who were New, Renewed Decrease, Renewed Same, or Renewed Increase YOY. Being able to Jump to... a _Constituents view per category would be icing on the cake.

It's straightforward enough to build a Pivot Table widget showing Constituent IDs and Names along with a break of Total Amount by either Fiscal Current Year Offset or Campaign Fiscal Year. However, that just results in the total amount of giving sitting next to each other in the widget, and not an automated evaluation of the YOY giving behavior.

Current view:


Desired view (with horrible markup):


Has anyone successfully used formulas to subtract a specific Fiscal Year (or Calendar Year) contribution amount total from an adjacent Fiscal/Calendar Year to reflect that value in the Pivot Table?

Thank you,
Brian