This wikiHow teaches you how to show battery percentage on Android on both stock Android and Samsung phones, and what you need to know about these numbers. This process should be the same for all Android phones, but there may be slight differences depending on the language used.
How to Show Battery Percentage on Samsung Phones – Android
Displaying the battery percentage on stock Android phones is easy if you know where to look, and it can be useful to know how much battery you have left. Here's how to permanently display the battery percentage on your Android phone.
Tap Settings on your phone.
Scroll down and tap Battery.