5% African Black, 0% Black American, 45% Arabic, and 50% Caucasian. By the way, the US president who may actually have had some African-American ancestry is Republican Dwight Eisenhower.
Have you seen photos of Obama’s father? No way was he 90% Arab and only 10% Kenyan; he was at least 90% Kenyan.
As for Eisenhower being part black ... LMAO! Maybe you’re thinking of Harding, whom Democrats accused of having black ancestry. But, in any event, there is absolutely no evidence that Harding was part black, either.