Hi, I think that's a really difficult question for anyone to answer, I'm not sure if there's any information out there with percentages I've not seen one but someone else may off, I wondered the same thing when I first started hrt, as we are all very different in our response to hrt, and everyone has a different expectation of how much hrt can relieve symptoms, from my own personal experience I don't believe hrt can be expected to relieve every symptom we have, I've been on hrt for 4 years and there's a lot that it's not done anything to relieve, it has however completely controlled hot sweaty flushes for me, some get on great with it, some struggle to ever feel good, and the really lucky ones never need it, I think it's very individual, personally I've given up seeking perfection I accept I will never feel like I used to and have come to accept the new me I don't much like it but I no longer obsess with it like I used to, I have had to manage the other stuff in other ways anxiety and insomnia being the worst, I so wish I was one of those women who used hrt and felt great, sadly I'm not.