My current rate is like 15-20% after I lost my full-time job. About 10% in software and engineering vs. 30% in finance.
My friends in earth sciences are essentially at 0% callback. Friends with identical experience to me from different schools are getting a <5-10% callback rate unless they have referrals.
I'm in 100% agreement with you and the other poster. There's no real silver bullet for quickly finding employment right now except the small niche of math/CS majors with good GPAs from T10 institutions applying to work in finance.
I read an article a while back about how it doesn't matter where you go to college provided you major in STEM. Here's a link, along with a counter point:
https://www.wsj.com/articles/do-elite-colleges-lead-to-highe...
https://money.com/college-matters-stem-majors/
I wasn't super caught up in the debate, mainly because I think that as an absolute statement, the claim that it doesn't matter at all is nearly impossible to defend. It's really a relative argument. Read that way, though, I do find it compelling.
Another couple of problems here is that 1) there's always a bit of hand waving around "STEM", with a temptation to turn it into a no true scotsman argument. I defined STEM for this purpose as majors that require you to take specialized upper division coursework with a prerequisite 2 year undergraduate calculus through linear algebra and differential equations sequence. Even that's loose though, and may include some finance or highly quantitative Econ majors (I suspect they do just fine, though).
The other is that I think this may hide some differences between elite STEM majors in the nature of the work done. There's a big difference between "senior data scientist at uber cool prestige media company with tons of autonomy" and "senior CRUD bug fixer."
Drop the "humanities major"--it's true even for STEM majors as well. There's a pretty consistent career track from college to junior to senior positions, and if you fall off that track, it is quite hard to get back in again. There are very few majors for which demand is high enough to let you get back on the track, certainly not all of STEM.