Percentage calcul changes depending on slicers applied

[Caradryan]

Good Afternoon,

I have a formula who calculates, the percentage depending on the total, but i would like it to change when i apply filter.

i tried this solution : 

Total_of_auth_>15_porcent = ((COUNTX(FILTER(RELATEDTABLE(Query1);[Duration_in_days]>15);Query1[Duration_in_days])) / COUNTX(KEEPFILTERS(Query1);[AMS_CODE])  )

Exemple : i apply filter 1 which have 1000 as a total's value, so what i would like is that the formula takes this data instead of the amount global .

thanks you for yoour help and time . 

have a good day