Occupancy
Calculate the occupancy of your group classes. You fill in two things: the number of people present and the number of available spots. That can be for one class, or for the classes in a period. The division is the same.
Number of people present. Who was at the class. For one class, those are the people present at that class. Over a period you add up the people present at the classes.
Number of available spots. How many spots there were in that class. Over a period you add up the spots of the classes.
Divide the number of people present by the number of available spots. The result is a share.
In percent, that share times 100.
For a period you use the same division. Divide the total number of people present by the total number of available spots. You do not average the percentages of separate classes.
The result is the occupancy: first a share, and in percent that share times 100.
A coach or studio makes the sum, a client does not.
The number is not a score. It does not say whether a class was good or bad. Nothing is added on top of the two fields.
If there are no available spots, the division cannot be made.
If you change one field, the result changes. More people present with the same spots give a higher share. More spots with the same people present give a lower share.