On all other iPhone models, you go to "Battery" in the Settings app and toggle on "Battery Percentage" in order to see the exact amount of power left in the status bar. On the new iPhone X, however, that option no longer exists since there's not enough room up there to show the Percentage indicator because of the notch for the TrueDepth camera system. But that doesn't mean it's gone entirely.
how to set battery percentage in iphoneX
On all other iPhone models, you go to "Battery" in the Settings app and toggle on "Battery Percentage" in order to see the exact amount of power left in the status bar. On the new iPhone X, however, that option no longer exists since there's not enough room up there to show the Percentage indicator because of the notch for the TrueDepth camera system. But that doesn't mean it's gone entirely.