That's what happening to me as well! It's been on 95% for more than 34 hours and this support seems to not help at all as almost the accounts that reply to you are bots or something, but I also have that problem and it's been like this for hours and I can't do nothing with it, turn it off, restart, or anything. I suggest you buy an android instead because apple isn't much of any help! I've looked everywhere but no one seems to know why my iphone is like this. I just got this iphone 4s which was on iOS 6 and tried to update it to iOS8.1 but it's been like this for a long time. APPLE NEEDS TO FIX THIS PROBLEM ASAP