Powerbi DAX How to calculate Percentage from Remaining value in a measure?

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i have this scenario, in which i have 3 "solutions" (s1,s2,s3) , each solutions has a "impact" % from the original value

Value = 100

i want to calculate the Percentage of s1 from value ,then the remaining perctenage of s2, and .... s3 from Value,

for example:

STEP 1 - 50% (s1) from 100 = 50

STEP 2- then 50%(s2) from WHAT IS REMAINING from STEP1 = 50% from 50 = 25

STEP 3 then 50%(s3) from WHAT IS REMAINING from STEP2 = 50% from 25 = 12.5

solutions impact value explain s1 50% 50 50% from the original 100 value s2 50% 25 50% from the "last row" value which is 50, so 50% from 50, 25 s3 50% 12.5 and now 50% from 25

how do i build a DAX measure for this please ? / way to make this work

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