So 25%

Also:

The average rent in the USSR around 1970 was 2⁠–⁠3% of the average urban family budget. This compares to an average of 20⁠–⁠25% before the Revolution, and 25⁠–⁠30% in the USA in 1970.^24^

Albert, Szymanski. Human Rights in the Soviet Union. Zed Books. 1984. Chapter 5

But it's a good point to start asking more questions when the claim looks too good to be true -- just as it is with the OP's meme

The only question you asked was, "does anyone want to move in to a living situation completely dissimilar to the one described in the OP (which effectively no longer exists, contrary to the point I was trying to make)? Didn't think so 😏"

The official average salary is a half-truth (hence a russian saying: if my boss eats meat and I eat cabbage, on average we eat golubtsi), most people in the regions are living on 30000 RUB a month or so. It may still be better than the US because you get public transit and thus don't really need a car but it's still not good. Capitalism ruins everything.

China is a more enticing proposition but it's very difficult/impossible for a foreigner to get a permanent residence permit.