Nexus 5X Battery draining 2x as fast as what Settings>Battery (app by app) claims

[AC Question]

So my Nexus 5X seems to drain its battery pretty fast (I've had it for a few months now). I notice that for example right now it's at 7%; if I go to Settings>Battery to see why it shows what's used the battery. The biggest is Screen at 22%, next is BlueTooth at 5%. If I add everything up I come up with 49% (about what I'd expect for what I've used it today), yet somehow I've actually used twice that much. It is like that everyday. I did the cache reset thing I've seen suggested, but that didn't help. Any ideas?