That would be 99.999967%, not 99.997.

There about 8,019,876,189 people in the world, 2640 of whom are billionaires, or about 0.000033%

https://en.wikipedia.org/wiki/The_World's_Billionaires

2023: In the 37th annual Forbes list of the world’s billionaires, the list included 2,640 billionaires with a total net wealth of $12.2 trillion, down 28 members and $500 billion from 2022. Over half of the list is less wealthy compared to the previous year, including Elon Musk, who fell from No. 1 to No. 2.[2] The list also marks for the first time a French citizen was in the top position as well as a non-American for the first time since 2013 when the Mexican Carlos Slim Helu was the world’s richest person. The list, like in 2022, counted 15 under 30 billionaires with the richest of them being Red Bull heir Mark Mateschitz with a net worth of $34.7 billion. The youngest of the lot were Clemente Del Vecchio, heir to the Luxottica fortune shared with his six siblings and stepmother, and Kim Jung-yang, whose fortune lies in Japanese-South Korean gaming giant Nexon, both under-20s.[10]