Three billionaires below have donated more money than their current net worth (Generosity Index >100%) and thus reduced to millionaire status. Which former billionaire is by far the most generous with an unbelievable index of 420,000%?

Philanthropic Generosity Index (GI) shows the percent of money donated to charity in relation to net worth in their lifetime. (Wealth-X, Oct 2015)

Charles Francis Feeney is on a mission to give away all of his wealth away and is working double time to die broke. He is the most generous person of the world and the king of philanthropy. His foundation, the Atlantic Philanthropies, has funneled $6.3 billion into education, science, health care, aging and civil rights to six countries. No one at his wealth level has ever given their fortune away so completely during their lifetime. He said, "I see little reason to delay giving when so much good can be achieved through supporting worthwhile causes today helping people. Besides, it’s a lot more fun to give while you live than to give while you are dead."

1. Charles Francis Feeney (Duty Free Shoppers Group)

Donated: $6.3 billion

Net worth: $1.5 million

GI: 420,000%

2. Sulaiman bin Abdul Aziz Al Rajhi (Al Rajhi Bank)

Donated: $5.7 billion

Net worth: $590 million

GI: 966%

3. Jon Huntsman Sr (Huntsman Chemical Corp)

Donated $1.2 billion

Net worth: $940 million

GI: 128%

4. Gordon Moore (Intel Corp)

Donated: $5 billion

Net worth: $6.5 billion

GI: 77%

5. Ted Turner (media mogul)

Donated: $1.2 billion

Net worth: $2.1 billion

GI: 57%

9. Warren Buffet (Investor)

Donated: $21.6 billion

Net worth: $61 billion

GI: 35%

10. Bill Gates (Microsoft)

Donated: $27 billion

Net worth: $84.2 billion

GI: 32%