68500% is the change from 1 to 686
Calculation steps:
[( 686 - 1 ) ÷ 1] x 100 = 68500%
Formula
Percentage change = [(686 - 1) / 1] x 100
Subtract the new number by the original number
686 - 1 = 685
685 ÷ 1 = 685
685 x 100 = 68500%
Example