I'm trying to create a chart similar to the following
where Daily Billing is the incoming for that day, Cumulative Current is the running total of the Daily Billing, and % LY is the Current Cumulative compared with last year. The cumulative of last year does not need to be shown, only the % LY.
So far no combination of RangeSum or other aggregation has been effective. I have attached the sample data of three customers from 4/1/16 through 9/25/17. The fiscal year begins on 4/1 so the accumulation from last year should begin at 4/1/16 and current year should begin at 4/1/17.