That's an incorrect reading of the table. That is 8.2% of "whites" are under that arbitrary poverty line.
In absolute terms 'whites' make up the largest racial group among the poor.
This doesn't change your general point since 'non-whites' are more likely to fall under that poverty line (24.4% of "Black" and 22.5% of "Hispanic"), but I think this is a worthwhile clarification.
Of interest is the rather low poverty rate among Asian-Americans. Certainly Asian-Americans as a group have experienced historical discrimination yet their incidence of poverty (11.8%) is half that of African-and Hispanic-Americans and just slightly more than the 'white' poverty rate.
According to
Census Bureau estimates about
68% of those under the poverty line are "white."