Hmm...I can't do percentages because I'm pretty sure it'd be inaccurate and I'm highly skeptical of any percentage given in this thread.
But much of my free time is spent modding PCs. Mainly my own, but I'm also now doing my friends' PCs and have a little side work for people who come to me through friends of friends, co-workers, etc. I make those people pay, but usually do my friends' PCs for free or ask for a nice blowjob.
I also play a shitload of video games, much of it is spent on games of old these days and I play a lot of emulators and such (any nitpickers can lick my bunghole because I've owned nearly all of the games in the past...it's just that I, y'know, sold them off when I went through my 'video games are for kids' phase when...I was...still a pre-teen...*ahem*), as well as modding old systems and I'm now attempting translating some games that never made it to the states, which is only possible through the beauty of emulation and ROM.
Other than that, I keep a pretty consistent Netflix viewing at least for an hour or two once every few days, and I read a whole lot of manga and watch a little anime here and there.
I read novels every now and again but it's pretty spotty on when and how long, if the book keeps my interest. I mainly read titles that I've read in the past. I think I've read I Am Legend about thirty times by now and am currently reading through a bunch of H.P. Lovecraft's works; I own almost every compilation of the genius.
I'll watch movies once every few days; if I've got some time off and I'm taking a break from modding, building PCs, etc...I might binge some titles. I like movies a lot but these days there are very few films in which I'm truly invested in and appreciate. A lot of them are more or less boredom killers for me. But when I do find a good few, I latch onto them and will rewatch them to death.
As for music, that isn't even able to be factored in because if I am able to listen to music (which, pretty much the only time I can't is at work or if I'm putting the little ones down...which doesn't take long), I'll be listening. It'd be much easier to list the few moments in which I am not listening to music rather than when I am. Music is, other than my technological addiction and my motherboard fetish, my world. It keeps me sane, it makes me insane in my big fat membrane, and the bumps of geese run rampant across my fetid skin!
And Porn. A shitload of porn. Fuck you, it's art. Beautiful, dirty, nasty art.