871.43% is the change from 70 to 680
Calculation steps:
[( 680 - 70 ) ÷ 70] x 100 = 871.43%
Formula
Percentage change = [(680 - 70) / 70] x 100
Subtract the new number by the original number
680 - 70 = 610
610 ÷ 70 = 8.714285714285714
8.714285714285714 x 100 = 871.43%