I was playing with it earlier and it was giving very suspicious numbers, I think it's rigged or somehow misleading to make people use the attached dating service tbh. Like, I'm sorry but 20-40 year old women are not 1 percent of the population.
EDIT: It's literally including kids in this "available dating pool" equation, for one. With all sliders and filters turned off or open as far as they'll go you get 78%.