1.43% is the change from 70 to 71
Calculation steps:
[( 71 - 70 ) ÷ 70] x 100 = 1.43%
Formula
Percentage change = [(71 - 70) / 70] x 100
Subtract the new number by the original number
71 - 70 = 1
1 ÷ 70 = 0.014285714285714285
0.014285714285714285 x 100 = 1.43%