What are the demographics of persons receiving public welfare in the US?

US census states:

There are 38 million black people

11.4 million of them are on welfare, or 30%.

(11.4 million / 38 million = .3 or 30%)

There are 229 million white people,

11.6 million of them are on welfare, or 5%.

(11.6 / 229 = .05 or 5%)

i.e.

30% of black people are on welfare

5% of white people are on welfare