The billionaire club is an exclusive one: There are only about 900 billionaires in the U.S., according to CNBC. But an even more distinct group is the billionaires who give away a high percentage of their wealth.
That includes investor and philanthropist George Soros (an estimated 76% of his wealth has been donated), novelist and ex-wife of Amazon founder Jeff Bezos MacKenzie Scott (about 50%-60%), investor Warren Buffett (30% so far, but has pledged 99%), and Microsoft cofounder Bill Gates and philanthropist Melinda French Gates (20% so far, but has also pledged 99%).
