For fun, I asked one of our grad students, who's in primate studies about the percentage, and the genus designation. His response is basically this:

"As a comparision, there are three species of elephant, African,
African Jungle (which until recently was just considered the same as an
African) and indian. They are about as genetically similar as chimps humans
and bonobos and yet most people can't tell the difference. The fun part is
that tradition in cladistics is that when you merge two groups the oldest
designation stays the same so the reality is it should be pan sapiens not
homo troglodytes. Owen of course is still just a dog."

(I love how he worked owen into the discussion...)