keep the upper quartile constant

All,

I ahve a table thus...

the average column is correct - and of course changes with column 1. however I need to be able to compare this with the upper quartile of the enitre dataset - i.e. I need the right hand column to give me the value 3 (in this case) all the way down.

I am using the below to calculate the Upper quartile.

UQMxDx =

VAR _A =
SUMMARIZE (
'MainFacts',
'MainFacts'[ProvCode],
'MainFacts'[p_spell_id],
"MaxRwCnt", MAX ( MainFacts[RwCnt] )
)
RETURN
CALCULATE(PERCENTILEX.INC ( _A, [MaxRwCnt], .75 ), ALLSELECTED(Providers[Current_code])

)

Is anyone able to point me in the right direction please?

Steve