At those levels, you're probably talking about at least some stock-based comp and that's harder to factor in.
But that aside, a lot of people would care less about the delta between $400K and $600K than the delta between $50K and $75K.
But that aside, a lot of people would care less about the delta between $400K and $600K than the delta between $50K and $75K.
For example, it can mean whether your spouse has the option to stay home to spend more quality time with the children, without having to sacrifice expenses due to income reduction; or it can mean how well (or not) you can take care of aging parents.
But in general percentage salary increments affect lifestyle more at the low end than they do at the high end. (And, of course, the absolute differences matter far more at the low end.