So I'm calculating female representation of our workforce and trying to track changes over time. So say in Jan 2018 I had 40% of the workforce are females and in Jan 2019 I had 45%. The percent change is 12.5%. I'm getting push back on this because "calculating percent change of percents is bad". However, if I was to calculate percent change on the actual number of females let's say 100 in Jan 2018, and 200 in Jan 2019, it would seem like our female representation should have doubled, but in reality the business grew. So by taking the percent change of percents, I feel like I'm accounting for any major fluctuations in headcount movement.
What am I missing here?