This could have been ripped out of Huff's book How to Lie with Statistics. First, 70% were African American even though they are less than 13% of the population. Second the relative increase for white babies is larger because the starting number is smaller. For example, go from 5 babies with the disease to 30 babies is a 600% increase. However, start with 25 babies and increase the same 25 babies and it's only a 100 increase. The first statement almost guarantee that the second statistic is manipulated. Don't give us relative measures. Given us the raw numbers and we can figure the relative increases ourselves.
Oh...but wait. You Leftists don't want us to think for ourselves...
Don’t forget the white hispanics.