You have to be careful with percentages in this context as well. People care far more about actual dollar amounts then percentage, for good reason.

Consider someone making $60,000 getting a 10% raise vs someone making $200,000 getting a 5% raise.

The first will get $6,000 more per year, the other will get $10,000.

These days you also have to look at total comp as well.

presumably they also change roles over those decades and accumulate experience that new hires would not have.