Calculating number of days it takes to reach 80% of total

DAX DAX Calculations
3

Hi @pete.langlois,

This seems the same as How to locate the day on which cumulative total is greater or equal to 80%, solved by Rajesh.

If you want the result in a card, (without the need of the context within a table), you can use:

DayReachEightyPerctII = 
 CALCULATE(MIN('Example Data'[Lag Days]), FILTER(ALL('Example Data'[Lag Days]), [Cumulative % of Total] >= 0.80))

Kind regards, DS