I’ve had battery issues since updating... :-(
Try the Apple Support Communities ...
https://discussions.apple.com/index.jspa
They are simply other users like you over there, but some have solved the very problem you have.
I will say one thing about that. I noticed my location symbol popping up now, and I see (for some reason) that some apps are doing that even when they are not active or “behind the scenes” apps - so I just cut them off from the locations services.
Charge your device to 100%. The hold the power button and home button in simultaneously until the device shuts down. Restart from cold. This usually fixes the issue.
No issues for me for the last update. But, I do close open apps (one time I counted and I had 27 open, oops ;)