Is it possible to have a calculation in a PT that resembles a complex formula calc?

Hey y'all,

Question: Is it possible to add a calculated field (or some sort) that resembles a complex formula in a cell?

Example: I have a pivot table that lists a person's name, how many compliant items they had, how many non compliant items and the grand total (sum(compliant & non compliant)).
What I want to be able to add to the pivot table is a field that has a complex calculation.
What I have:

Count of C or NC Column Labels
Row Labels Compliant Non Compliant Grand Total
Joe Smith 9 24 33

What I would like to have:

Count of C or NC Column Labels
Row Labels Compliant Non Compliant Grand Total Compliance < 50%
Joe Smith 9 24 33 38%

Formula to get the 38%: =IFERROR(IF(Compliant/Non Compliant=0,"",IF(Compliant/Non Compliant<.5,Compliant/Non Compliant,"")),"")

I've attached a sample file to help.
Don