not only was Poland sacked in 1939 by both the Nazis and the Communists from the Eastagrams said:
yeah, my memory was telling me Romania was one of the worst at like 25%, but the wiki article table listed poland as the worst. I just didn't have time to dig into it too much.
but then the Warsaw Jewish Ghetto revolt of 1943 and then the Warsaw Uprising of 1944 pretty much left it like Gaza.
one thing left out is that the 6 MILLION Jews who were massacred were mostly all from Eastern Europe, which is why those countries have the largest losses.