Good afternoon, 

Lots have already been said on this..Make it simple. It was not possible to associate a percentage to the pass/not pass and proficiency/below proficiency level except from the 61% passing level that was reported or the 58/65% threshold level that is "observed" elsewhere (by experienced observers, let's say) due to the modified angoff evaluation model used by pmi.

That said, let's try another approach: top down approach to understand "roughly" but more accurate than ever, the proficiency level you get in each knowledge area after the exam.