Source!
You need to answer a few questions so the calculations can be done.
Do you agree that there are currently 42 million on food stamps? That's the latest number I could find.
Do you accept 325 million as the current U.S. population? Based on 2017 census projections using 2010 numbers.
Do you agree that blacks constitute 12.5% of the population and whites 70%?
Do you agree that of all food stamp users, 39% are white and 25% are black? Those are the latest numbers I could find.