To show the battery percentage on your MacBook, follow these steps:

1. Click the Apple menu () in the top-left corner of your screen.
2. Select System Settings.
3. In System Settings, go to Control Center.
4. Scroll down to the Battery section.
5. Toggle on Show Percentage.

Once enabled, the battery percentage will appear next to the battery icon in the menu bar, giving you a clear view of your MacBook's remaining battery life at all times