Earlier quoted context omitted.
60%? Forget that. Why should anyone give up their right to work for a little over half of their market value? There is no excuse for allowing less than 100% compensation, and that should include not just salary, but projected bonuses.
It's not like the specific job is the only thing you can do - there are other jobs that don't break the NC. 100% is too high, and 50% is too low. But the amount should be negotiable for each person.
The problem is that 60% is not about making you whole. It’s about discouraging NCs in general.