7.41% is the change from 81 to 87
Calculation steps:
[( 87 - 81 ) ÷ 81] x 100 = 7.41%
Formula
Percentage change = [(87 - 81) / 81] x 100
Subtract the new number by the original number
87 - 81 = 6
6 ÷ 81 = 0.07407407407407407
0.07407407407407407 x 100 = 7.41%