Filtering a value in pie chart without changing other value's percentages

Hey jlankford I have just checked, and --at least in the free version of-- Donut Chart by ZoomCharts there is no option to select how the Data Labels are displayed.

In a normal donut / pie chart though, there is.
I have tested this measure:

CostPerc =
VAR y =
    SUM ( [Value] ) + 0
VAR x =
    CALCULATE ( SUM ( [Value] ), ALL ( Table ) )
RETURN
    DIVIDE ( y, x, 0 )

In modeling, you can choose to display it as a percentage. This measure always calculates the complete total value, thus even if you filter out one or more IDs the other IDs' percentage won't change.

Thank you very much! I just realized that I was making this WAY harder than it had to be. By calculating share of total, and then using that value independently of the "percentage" calculated by the pie, I simply display values.