I joined a seed company w/ a $10m valuation in early 2014, starting offer was 1%. after series a, b, c, and some smaller retention grants, I had about 0.4%. Left before fully vesting, so ended up with 0.3%. Company was acquired for $4b and I made $12m. After taxes, netted about $7.5m
Joined another seed company with $10m valuation in 2016, starting offer was 3%. after a few dilutive funding rounds and some generous retention grants, ended up with 1.2%. Company also acquired for $4b and I made $50m. Will probably have about $35m from this one after tax.
Obviously I was _incredibly_ lucky in picking those two companies, but maybe those numbers shed some light on dilution, taxes, etc. I wouldn't have made anywhere near that much if I'd joined those companies after series a, let alone b or c. I encourage anyone I know who wants to make 7 figures to work for faang for a few years. If they want to make 8 figures, start a company or join as the very first hire (as I did) if you're not willing to take the risk of being a founder.