To the OP, it would appear you're using the phone, with the screen on, a lot. And yes, the screen will use a lot of battery. But your screen capture would be more useful if you show it from a full charge until just before you have to plug it in. There's no way for us to see what usage was before or after you started to recharge.
Also, on this screen, tap where it says "Shermo." That will display another screen showing screen-on time.
Finally, come back to this screen and tap on the graph. That will display a new screen with additional information.
To AngryShortGuy: I'm not sure what update you're referring to, but the general answer to issues that start after an OS upgrade is to back up your data and do a factory reset. A pain, yes, but it will almost always solve upgrade related issues.