62k€ = 75k usd, 150 - 75 = 75. so assuming both numbers are before tax (and neglecting things like bonuses, benefits, equity, etc that you probably need to add into both numbers), there's your comparison.
Now the question to you is "is Lyon worth 75k/year over California". That's not a question of compensation, that's just a question of how much you value the difference in culture and society. Do you want to spend 75k$/year on purchasing universal healthcare (edit: I.e. your share of healthcare for everyone instead of what you purchase in the US, which is approximately just healthcare for you), a better public education system, a better social security system, less... American... neighbors, and/or whatever else you think Lyon gives you over California.
Edit: Accidentally had this saying "after tax" instead of "before tax" for an hour, I think everyone replying to me mentally corrected that anyways, but noting that I fixed it here in case they didn't.