24.29% is the change from 70 to 87
Calculation steps:
[( 87 - 70 ) ÷ 70] x 100 = 24.29%
Formula
Percentage change = [(87 - 70) / 70] x 100
Subtract the new number by the original number
87 - 70 = 17
17 ÷ 70 = 0.24285714285714285
0.24285714285714285 x 100 = 24.29%