How to Compare Salary% in Amount field in an ICP Approval Rule

Summary: Hi All,

I have a unique requirement in an ICP Approval Rule.

Let's say, I have an ICP called "Adhoc Bonus" and it is a Manager initiated ICP. Now, when a Manager initiates this ICP for their reportees' then the approval path should be as follows:

If the amount of "Adhoc Bonus" is less than 20% of Annual Salary then it should go to BU Head (an AoR) for approval

If the amount of "Adhoc Bonus" is an 20% of Annual Salary then it should go to CHRO and then to CEO for approval.

Now the issue i am facing is that in the IF clause of the rule i do not have an option to compare 20% of Annual Salary