change calculating with the selected data

[bi_team_ru2]

hi!

some times ago i`m need calculate the measure

"share on cumulative total"(4-th columns on pictures)

then i`m don`t selected anyone, all worked correctly (basic share=1), but on selection any foreign filter, basic share calculated incorrectly (less then 1).

 for the correct accounts, i need change formula`s of account

how me , using IF, 
input  all variants in formula?

 

thanks

[bi_team_ru2 · Accepted solution]

for other, that has problem with measure

MPop = sum(Population[Population])

MTotalPop = CALCULATE(SUMX('Population';'Population'[Population]);ALLSELECTED('Population'))

MPopCumul1 = CALCULATE('Population'[MPop];FILTER(ALLselected('Population');'Population'[MPop]>=MAXx('Population';'Population'[MPop])))

and Measure Share
MShare = DIVIDE('Population'[MPop];'Population'[MTotalPop]) 

MShareCumul1 = CALCULATE('Population'[MPopCumul1]/'Population'[MTotalPop])

good luck