dax

Hi Anonymous 
If i understood you correctly the measures to use are :
1.

% Actual = sumx('Table',DIVIDE([Sale],[TGT]))

2. 

flag = if([% Actual]>1,1,0)

3.

counter = SUMX(

SUMMARIZE(VALUES('Table'[STL]),"Counter_1", CALCULATE(COUNTROWS('Table'),FILTER('Table',[flag]=1))),[Counter_1])

 

Result :

pbix is attached

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Anonymous 
60K is not so huge..if you are using an import mode.
If the report isn't working with the formula with the virtual table.
Try to use a calculated column.

Actual % = divide('Table'[Sale],[TGT])

and for counting the measure :

count_2 = CALCULATE(COUNTROWS('Table'),'Table'[Actual %]>1)

the updated pbix is attached

If this post helps, then please consider Accepting it as the solution to help the other members find it more quickly