Filtering Matrix Hierarchy by Parent's Measure Value

Try defining a new parameter that has values from 0% - 100% and create a measure to filter based on those parameter values in a slicer.

I defined a new table named Range and defined this as a filter measure.

InSelectedRange =
VAR Level1Growth =
    CALCULATE (
        [YTD vs PYTD Revenue %],
        ALLSELECTED (),
        VALUES ( Companies[Level 1] )
    )
VAR RangeBuckets =
    FILTER (
        Range,
        Range[Range] <= Level1Growth
            && ( Range[Range] = 1
            || Range[Range] + 0.1 > Level1Growth )
    )
RETURN
    IF ( ISEMPTY ( RangeBuckets ), 0, 1 )

See attached file.