The table below shows an unoffical comparison between the 2015 MCAT and old MCAT scores. This was created and posted to student doctor forum (but not by AAMC). However, from what I see, I have made similar comparisons myself. Take from it as you desire, for we will see how these new scores play it as medical schools begin admitting students for this cycle. Below is a link for this unofficial chart found on Student Doctor Network.
2015 MCAT v. Old MCAT (Percentile Comparison)