38.57% is the change from 70 to 97
Calculation steps:
[( 97 - 70 ) ÷ 70] x 100 = 38.57%
Formula
Percentage change = [(97 - 70) / 70] x 100
Subtract the new number by the original number
97 - 70 = 27
27 ÷ 70 = 0.38571428571428573
0.38571428571428573 x 100 = 38.57%