It depends on role. If the pitcher is a starter in a five man rotation (meaning he has at least 60 STA and at least 20 DUR), then I will put their PC at 20 pitches above the STA rating. In this case, 80 pitches.
A 10 DUR/82 STA cannot start in a 5 or 6 man rotation. He can be used in a tandem rotation set-up and in relief. I'd set him to 40-60 pitches, depending on his other ratings and his role.
If the pitcher is being used as an RP, I set their MPC to 5 under their STA, so a 50 STA is set to 45, a 30 is set to 25, etc. This means I do not use players with sub 15 STA, unless they have 95+ DUR and sometimes, not even then.
Others will have different strategies that might be more efficient or intelligent.