8412.5% is the change from 8 to 681
Calculation steps:
[( 681 - 8 ) ÷ 8] x 100 = 8412.5%
Formula
Percentage change = [(681 - 8) / 8] x 100
Subtract the new number by the original number
681 - 8 = 673
673 ÷ 8 = 84.125
84.125 x 100 = 8412.5%
Example