Expression needed - % of a cell in two columns

[Anonymous]

Columns names are "Suspense > 90 days" and "Suspense < 90 days".  Valuation date column contains the month end date (See table below).

I need to be able to find out:  Of the total suspense for May 2018, what part of this total is the Suspense < than 90 days.

I have a variable created vCurrentDate =Date#(Max(ValuationDate)).   I have used this in other formulas to populate the most current information.

Sum({$<ValuationDate={'$(vCurrentDate)'}>}[Suspense >90 days])

Suspense > 90 days	Suspense < 90 days	Valuation Date
1000	250	1/31/2018
1250	300	2/28/2018
950	200	3/31/2018
575	658	4/30/2018
325	12500	5/31/2018

Can someone help me with this expression please?