I don't think using a percentage as reference is useful in this case. There are a variety of reasons why giving 2 billion (even if it's 1.2%) is much different then giving a few hundred or thousand dollars. You have to be much more concerned about the overhead, how the money is being spent, who is managing it, etc... because even a 1% waste results in a loss of 200 million dollars.

Secondly, I don't know if anyone has really quantified how much damage or potential damage Bezos has done in his lifetime, and I would be surprised if it was actually net negative. What honest to god damage has he done? Some people have rough working conditions and are underpaid ( these people are not forced to work at Amazon). I agree that is bad and think they should be paid more and treated better. What did the world benefit though? Everyone gets generally good cheap stuff reliably within a few days to their doorstep, saving millions in man hours yearly.