Filter Not working on Dax

Hi Thanks for working over my issue. 

But still the issue is not solved.

The requirement is that based on month selection we want only those Site where the sales continously went down.

You can try diffreent approach aswell. 

For an example - suppose i selected June 23 to Oct 23 so total month will be 5, so we want only those site where continously sales went down in these selected month.

Let say there is a site 123 and sales of month on month 

Month                Sales
June 23              100

July 23                 90

Aug 23                80

Sep 23                75

Oct 23               72

Here as we can see the sales is continously down so we need to only find these kinds of site based on month selection.

Mean the result should be filtered out dynamically based on number of month selected.
if selected 5 month then need to show those site where 5 times continously sales went down, if selected 6 month or 8 month then need to show only those site where continously 6 times or 8 times sales went down.


Kindly help me here so that i can come out from this strange challenge. 

Thanks in Advance!!