However, to help users better determine the battery life, Apple
has removed the “time remaining” indicator from the battery icon
in the menu bar with the latest update. You can still see the
image on the top of the screen, and you can see the percentage,
but you will no longer be able to see how much time is remaining
before your battery dies.
The reason for removing it is very simple: it wasn’t accurate.
Apple said the percentage is accurate, but because of the dynamic
ways we use the computer, the time remaining indicator couldn’t
accurately keep up with what users were doing. Everything we do on
the MacBook affects battery life in different ways and not having
an accurate indicator is confusing.
This is like being late for work and fixing it by breaking your watch.