Calculate sum for specific period and difference between same period of previous year

hi kpangelinan

Try the following

Assumptions:  The calendar table and the dataTable are linked on the date columns of respective tables.

                        You also have a column in Calendar Table for YearMonth

1. Create a measure called  ARRTotal = sum(datatable[ARRAmount]).

2. For Previous Year Same Period create the measure

   ARRPrYr = Calculate([ARRTotal],SAMEPERIODLASTYEAR('Calendar'[Date]))

3. Now plot a Table visual with 

   a) YearMonth column from calendar table

   b) Measure ARRTotal

   c) Measure ARRPrYr

You should be able to see the result you expect.

If this solves your issue please accept this as a solution and also give KUDOS.

Cheers

CheenuSing