Need guidance: dynamic cumulative sales data comparison setup
I am looking to conduct a dynamic data comparison by comparing the current year's sales data with that of the same period last year. The data is continually rolling, with each day's sales data contributing to the total sales. consequently, I expect the sales data from the corresponding period last year to also accumulate accordingly. however, I've observed that the data from last year is not automatically increasing. Could you please provide guidance on configuring this setup effectively? thanks