> Americans pets are wealthier and better fed than 99% of the world’s people.

If so, that would, mathematically, also include a minimum of about 75% of the US population, and that assumes the entire global top 1% is American, which it isn’t.

328 million/7.9 billion ~= 4.15%

The poorest Americans are definitely much poorer than the poorest western europeans [1]. Western Europe has 196 million people (about 2.4% of the world population) [2].

I'd estimate that 10% of the world population (790 million people) has a comfortable modern middle class life. It's just an intuition. Northen Europe as 106 million people.

[1] https://www.worldometers.info/world-population/western-europ....