An extremely distinct minority - few and far between.
Numbers pulled on serious reports have man-on-boy abuse in over 90% of cases.
Few and far between that we know of.
In any case, what the heck does the percentage matter, especially to the vics?
A predator is a predator is a predator.
I could give a rat’s a$$ about the sexual orientation of the perp. They are ALL pedophiles.