That ain't bad considering how much battery use was from the App Store. I take it you've been installing apps and if so, abnormal battery use (because no one installs a crapton of apps in one sitting unless they just got a new phone, hahaha). It'll get better even after another couple days.
Here's mine so far today (of course, mines a 6+ so it does have a bit of a larger battery than a 6):
Thanks for the replies I'm coming from an android phone so not sure how normal these battery life's are I had the iPhone 5 but it's been like 2 years since owning iPhone had it for a day and been downloading a bunch of apps