dividing row values with subtotal

Hello Anonymous ,

Could you give more info on the measure you tried ?

In a first look, I could suggest in your measure to calculate the SUM of TY_Actual filtering by DayPart, and to calculate the same SUM but selecting all your table with ALL or ALLSELECTED depending on your need.

Then you can divide the filtered sum by the second and format your measure as %.

It could look like :

MyPercentage = 

VAR FilteredSum = CALCULATE (
SUM('YourTable'[TY_Actual], 
FILTER('YourTable', 'YourTable'[Daypart] = SELECTEDVALUE('YourTable'[Daypart])
)

VAR GlobalSum = SUM('YourTable'[TY_Actual])

RETURN DIVIDE(FilteredSum, GlobalSum)

Hope it helps

Vincent BLOT
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Hi, Anonymous 

try below code 
just adjust your table and column name

result = 

var a = sum('yourtablename'[TY_Actual])
var b = calculate ( sum('yourtablename'[TY_Actual],
                  removefilters('yourtablename')
                   )
return
divide (a,b)