Huawei installing new software, Stuck on 90%, have I lost all my data?

Hello, I have a Huawei Mate S, the power button stopped responding so I couldn't lock my phone. I decided to download a volume button lock app to lock but then I still couldn't switch my phone off so I held the power button for long enough, it restarted my phone and took me to a menu with three options: 1. Reboot now 2. Factory Reset 3. Wipe cache partition... :( Did not want to factory reset because I haven't backed up in a while, I chose to wipe partition and then reboot but it always took me back to the same menu with 3 options and now it got worse because its trying to install huawei software and it gets stuck on 90% everytime and worst is...it still can't switch off, only restarts back in to that huawei software installing screen. Please help, have I lost all my data? What's causing it to get stuck at 90%. Thanks

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