I'd guess that somewhere near 100% get revised and resubmitted (Say, 90%+ ?).

Developing apps is a big investment in time (if nothing else). It's hard to imagine you could get to the point of having any kind of reasonable app to submit without overcoming a few roadblocks to get that far, so what's one more?

I suppose I don't have a good feel for the proportion of shovelware being submitted, where apps submitted is very low effort, and a "developer" would be fine with walking away from it. If there's a lot that would skew the numbers.