No penalty for blown saves, or points for Ks for pitchers.
Check out this pitching line: 7 innings, 6 hits, 3 walks, 6 K, 2 ER, loses 3-2.
Calculation: 7X3=21, Minus 3 for walks, 6 for hits, 2 for ER, 5 for loss = 5 points for a pretty well pitched game.
To get to the target of 36%, I'd suggest adding 1 point for Ks, and 2-3 points for a quality start.
Also, 2 or 3 point deduction for a blown save.