It wiped out entire “plague villages,” I’ve seen the memorials. The percentages you cite are Europe overall. On a smaller scale, it was almost total in some localities.
You bet. Correspondingly, some areas were missed entirely.
The results of the Black Death, BTW, were not entirely negative (for the survivors, of course.)
In an agrarian society, a smaller population could concentrate on the most fertile land, which meant a big increase in productivity per person.