Show battery percentage at the top by default in Tower

Hi, I connected my telemetry to my drone, all works fine as expected, but at the top where it shows the voltage, I want to show the percentage! It shows the percentage in the dropdown when I click on the voltage, is there a way to set it to percentage display by default? No, I can’t click the option in the dropdown menu.

Note: I know that I need to calibrate the power module and I have done that, that’s not my question, my question is about the tower interface, how to show the battery percentage at the top that it already calculates and knows instead of the voltage so I don’t need to click it every time I want to know the battery percentage