I could give you benchmarks. I'm just not sure if they're useful. You know ... apples to apples.
I'm guessing you feel like your phone isn't getting the proper battery life. Here's my suggestion. Take it to a Genius Bar, they have diagnostic stuff that lets them run tests.
Anyhoo, if your battery is compromised, depending on your warranty, they might give you a new one.
Nowhere near one of them darn genius bars; my battery life is 97%, it is not the battery of that I am sure, I am wondering if it is the update I did 11.4.1 because after I did it my usage dropped way down.
So if you have the time...
a. what IOS version are you running, BTW if you are on an earlier version than 11.4.1 do NOT download it yet just in case
b. do the figures as discussed when you think of them and we can compare
Thanks