I think the most useful comparison would be to judge it against expenses, since not all businesses would need the same amount of loans. The closest related statistic I could find is that all minority-owned businesses generate around 3% of revenue. The loans seem to have been given out fairly evenly as intended, but the small impact of black businesses on the economy seems like a much more significant disparity.
https://www.usnews.com/news/articles/2016-09-01/most-of-amer...