128.57% is the change from 70 to 160
Calculation steps:
[( 160 - 70 ) ÷ 70] x 100 = 128.57%
Formula
Percentage change = [(160 - 70) / 70] x 100
Subtract the new number by the original number
160 - 70 = 90
90 ÷ 70 = 1.2857142857142858
1.2857142857142858 x 100 = 128.57%