658.57% is the change from 70 to 531
Calculation steps:
[( 531 - 70 ) ÷ 70] x 100 = 658.57%
Formula
Percentage change = [(531 - 70) / 70] x 100
Subtract the new number by the original number
531 - 70 = 461
461 ÷ 70 = 6.585714285714285
6.585714285714285 x 100 = 658.57%