It looks like there is a field percentageformatted which contains the value that is displayed on the screen.
By regular rounding rules, the percentageformatted is incorrect in this screen shot, but that is the value.
The three fields, from left to right are:
finalGrade.gradeformatted
finalGrade.percentageformatted
finalGrade.grademax
I am not sure how percentageformatted is calculated, but if you divide gradeformatted by grademax, multiply by 100 to get a percentage, and round to two decimal places, you actually get 92.75 %.
