17.24% is the change from 87 to 102
Calculation steps:
[( 102 - 87 ) ÷ 87] x 100 = 17.24%
Formula
Percentage change = [(102 - 87) / 87] x 100
Subtract the new number by the original number
102 - 87 = 15
15 ÷ 87 = 0.1724137931034483
0.1724137931034483 x 100 = 17.24%