On the watch: If your watch face can be customized to change the information featured on your watch face, press and hold to access the customization settings. Tap the pencil icon and then tap the data point you want to change, then select what information you want to view from the list of options. Press the middle button to go back to the main watch face after you’ve set the option you want.
On the app: Tap on your watch in the app, then select tap to customize and swipe over to the Data section. Tap the data point you want to change, then select what information you want to view from the list of options. Tap the check mark to save watch face.