-33.58% is the change from 685 to 455
Calculation steps:
[( 455 - 685 ) ÷ 685] x 100 = -33.58%
Formula
Percentage change = [(455 - 685) / 685] x 100
Subtract the new number by the original number
455 - 685 = -230
-230 ÷ 685 = -0.3357664233576642
-0.3357664233576642 x 100 = -33.58%