631.43% is the change from 70 to 512
Calculation steps:
[( 512 - 70 ) ÷ 70] x 100 = 631.43%
Formula
Percentage change = [(512 - 70) / 70] x 100
Subtract the new number by the original number
512 - 70 = 442
442 ÷ 70 = 6.314285714285714
6.314285714285714 x 100 = 631.43%