I happen to be German, currently live in Nuremberg, and finally got around to visit Auschwitz last year. But i do not know the relation of people that flew and people that stayed. Fleeing also involed the ability to pay for the ticket. I probably read some about that, but forgot. It is true that the killings mostly happened in the east. But quite many were deported there just for this purpose.
Wikipedia: Over 90% of Polish Jews were killed, and about 75% of German Jews.
Until I checked, I didn't realize that the proportion of German Jews who were killed was that high. I didn't have a specific number in mind, I think I was just giving more attention to the idea of those who'd escaped.
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).