87.14% is the change from 70 to 131
Calculation steps:
[( 131 - 70 ) ÷ 70] x 100 = 87.14%
Formula
Percentage change = [(131 - 70) / 70] x 100
Subtract the new number by the original number
131 - 70 = 61
61 ÷ 70 = 0.8714285714285714
0.8714285714285714 x 100 = 87.14%