I don't usually let my phone get too low. But the previous charge I decided to let it get lower to see how the battery was doing. Screenshot below. Then I charged my phone last night. And now it's already gone down over 20% in two and a half hours with less than 2 hours of screen time. Such a difference from yesterday and the day before. I've been doing the usual and haven't added anything new. I run device management and I close things out the same as usual. I just restarted my phone even though it was turned on a few hours ago. I am hoping this is just a fluke.