Yup. 50% is possible if you reject 3-4 men for every woman you hire for a programmer position.
I don't think the percentages in management really matter because you tend to get promoted from lower rungs. Management % probably reflects the programmer hires 5-10 years ago.
We really need to look at the percentage of female applicants. In the ~1000 applications I've seen directly from indeed etc, less than 20% we're female. I didn't count, but it seemed closer to 10%. It's so bad that for some job listings I remember not receiving a single female application for 20+ males.