To start I have a 13 week 90D Turnover with the general expression below. It pulls from view where it lists only those in the 90D window and calculates turnover for each corresponding trailing 13 weeks.
I need help creating a new graph showing a 13 week trend but now cumulative from the start of the data (in this case beginning of 2024) where each week layers onto the next with a cumulative effect. By the end the 761 total from 8/12 would be more like ~25,000 starting from week 1 of this year and 8/5 would show ~24,300. Same logic for the terms. This view would take out any recent noise.