Your number is very general because you haven't given us any indication of what settings you have turned on/off, if gps is running rogue, if you have push email, tons of notifications, Facebook with GPS...I mean there are so many variables, but here is my 2 cents.
If a lot of the stuff you have is turned off and don't think its GPS or some bug, or low signal issue, I would go to the Apple store and run a battery check with genius bar. I am averaging 10-14 hrs of usage with my new iPhone 6, and am using spotify and google maps, some basic gps usage, and safari, twitter, etc, I do use FB but turn off GPS for that.