Hi Martin, how are you?
I'm not sure if I got your question right, but from my undertstanding what you want is something like this:
Using your previous measure "Budget", I've created the new "Budget Today", in which you calculate the Budget to a date context that is minor or equal to the current date (today).
By doing so and by placing this new measure on the field "Target Value" as shown in the image, I think you will get the result you are looking for.
Is your objective to also get the "Planned % Complete" for today? If so, you need to create a new measure, e.x. "Planned % Complete Today" by following the same logic:
- Calculate the "Actual Today" = calculate ([Actual], Dates[Day] <= TODAY()
- Calculate the "Planned % Complete Today" = divide ( [Actual Today], [Budget Today])
The result is a card with this value:
Hope I was of assistance!