8462.5% is the change from 8 to 685
Calculation steps:
[( 685 - 8 ) ÷ 8] x 100 = 8462.5%
Formula
Percentage change = [(685 - 8) / 8] x 100
Subtract the new number by the original number
685 - 8 = 677
677 ÷ 8 = 84.625
84.625 x 100 = 8462.5%
Example