I'd say I'm at ~40% based on principal and retirement savings.
I'm fairly invested in my business, and that takes time to see actual quantifiable ROI. But yea, based on the numbers I just added up, my net worth increases by about 40% of my total take home pay year/year. Of course its not very liquid/accessible, but I also keep a decent enough buffer if I don't get too ham-fisted with the racing and buying of car parts. Can be tough to keep myself in check as a bachelor though
Personally, if I could it would be lower, which has always been my argument against Defined Benefit Pensions (no access to the cash when you really need it, which is young). But then again, for 95% of people, it probably works well for them so they don't just waste the extra money every month. I certainly don't know many people my age with as much retirement savings as I have.