Given that female domestic abuse figures are easier to track, if one takes them as a suggestive proxy for "women behaving badly" in general, then the rate of false claims could be in the 30%-40% range.
But as Bearing pointed out in a video recently, the rate of actually substantiated claims (claims that have resulted in conviction) is pretty low too. The grey area inbetween - claims that have been made that haven't led to an actual conviction and haven't been disproven either, is much bigger than either statistic.
So who do you believe? Feminists say believe the female - but that reasoning is circular, based on the low false claim rate, which is unsubstantiated. But it also seems wrong to believe the man, because it's obviously true that even if women aren't the innocent angels of Feminist mythology, men are a bit more brutish than women on the whole, and stronger too, so that does weight expectation somewhat.