Show the battery status as a percentage
The status icon in the top bar shows the charge level of the main internal battery, and whether it is currently charging or not. It can also display the charge as a percentage.
Display the battery percentage in the top bar
Abra o panorama de Atividades e comece a digitar Energia.
Clique em Energia para abrir o painel.
In the Suspend & Power Button section, set Show Battery Percentage to on.