It dropped less than every movie in the top 10 on Sunday. It's not following Avatar but it definitely isn't following the average holiday movie. It's falling somewhere in between.
Avatar dropped 53% on Monday while the rest of the top 10 mostly fell in the 60s.
It's safe to expect 58% - 62% drop today(8.1M - 8.9M), however if it does worse, then I'm going away for a day or two, not in the mood to hear anyone's shit. Tele, cover me.