What should be the excellent rate of students' physical health?

Every index in students' physical fitness test can reach more than 90 points, and students' physical fitness can be called excellent, and the excellent rate refers to the proportion of students with excellent physical fitness in a range to the total number. For example, there are 40 students in a class, and there are 10 students with excellent physical fitness test, then the excellent rate of students' physical health in this class is 10 ÷ 40 × 6544.