68400% is the change from 1 to 685
Calculation steps:
[( 685 - 1 ) ÷ 1] x 100 = 68400%
Formula
Percentage change = [(685 - 1) / 1] x 100
Subtract the new number by the original number
685 - 1 = 684
684 ÷ 1 = 684
684 x 100 = 68400%
Example