Difference between 2 calculated values

Hi Team, 

I'm new to DAX and appreciate some help.

I am trying to calculate the difference between FTE Salary Compa Ratio for Female to Male. 

I have created towo calculated fields to average filter on Male and another for female as below. 

All I'd like to do is get the difference between the two below calcs and divide the total by FTE Salary Compa Ratio. so basically Female FTE Salary Compa Ratio - Male FTE Salary Compa Ratio divided by FTE Salary Compa Ratio.

Female FTE Salary Compa Ratio = 
CALCULATE(
	AVERAGE('Report_Entry'[FTE Salary Compa Ratio]),
	'Report_Entry'[Gender] IN { "Female" }
)

Male FTE Salary Compa Ratio = 
CALCULATE(
	AVERAGE('Report_Entry'[FTE Salary Compa Ratio]),
	'Report_Entry'[Gender] IN { "Male" }
)

so my total outcome should come something like this.