Our math team had m students last year, but this year it has already n students! By what percent did the number of students grow?

(n-m)/m * 100%

Step-by-step explanation:

The original amount is m

The new amount is n

Take the new amount and subtract the original amount

(n-m)

Divide by the original amount

(n-m)/m

Multiply by 100 %

(n-m)/m * 100%

10% of increase is the final answer! : )