The ratio of destroyed tanks we know quite well.
USSR lost 97 K , while Germans lost about 35 K on East Front. Thus ratio is 1 to 2.8.
But the biggest loses Soviets had in first year of the war (1941 and first half of 1942). Later tank loses were about 1:2.
The ratio of killed men is much more obscure. My estimate is that USSR lost 13 mln, while Germans and allies lost 4 + 0.6 mln = 4.6 mln. Thus ratio is again 1 to 2.8. This ratio gradually decreased from about 1:10 in first year to about 1:1 in last year.