The Dashboard on your Activity screen can easily be customized to meet your needs.
To change which value is displayed most prominently, just tap one of the other three values. It will change places with the biggest one automatically.
To select a different value from the ones displayed on the Dashboard, press and hold on the value you want to change. Select one of the possible values from the list that appears and then tap "Done". Now you have switched values.
Note: The Dashboard can display a maximum of four values.