Sure, a lot of people died in a most savage decade but percentage wise the Jews took the worst of it.
That’s not even true. By percentage more Gypsies died than Jews.
What percentage of noncombatant Jews died out of their respective populations.
The International Red Cross, who had access to the camps throughout the war, right after the war went to great lengths to calculate an accurate figure for that, so you are in luck. They figured about 271,000 total deaths in the camps (mostly during the last months of the war, and mostly from typhus), of which about half were Jewish.
They also noted that, despite many visits to the camps during their operation, they witnessed no evidence of a mass murder program of any sort, and no gas chambers. In fact, they inspected the shower facilities in every camp to make sure they functioned correctly, so that inmates could regularly bathe themselves. No fake showers were found.
