There is an option within the grade called "Enter Value Show Percent" this
option shows both the entered total value and the percent scored in each
category. This option is located in the first dropdown on the top right of the
gradebook. There are other options in this dropdown, for example there is one
that only shows the percent score.
I've attached a screenshot of where it
is: https://www.screencast.com/t/xgYtuMc1b
