CLEP scoring versus REA practice exams or raw percentages?

[Dark1778]

Hello. I apologize if this is out of place at all, but I have an unusual situation and it is very important. I don't need CLEP credit, but my university will give me my diploma if I can get a Spanish CLEP score of 40+ (not the normal 50 for credit). The REA practice book says I need a raw score of less than 22% on my exam to get a score of 40 which obviously seem absurdly low.

I understand how they vary, but can anyone give me general ballparks of percentage scores that might correlate to certain weighted scores? I don't know if I'm aiming for 60% or 20% or what and I only get one chance to take the test.

Thank you kindly