Ah yes, the ol' box office graveyard amiright?
Anyway, I think anywhere between
500-700 million is still very possible on the condition that the movie is actually good, because word of mouth is going to be the deciding x-factor here (see Edge Of Tomorrow being saved by word of mouth from its poor marketing, or BvS falling off a cliff in the Asian market after opening weekend).
If the movie is trash though, well, fukk it then. Don't hold it against me that Hollywood loves shoving guaranteed money of the table.