-41.9% is the change from 685 to 398
Calculation steps:
[( 398 - 685 ) ÷ 685] x 100 = -41.9%
Formula
Percentage change = [(398 - 685) / 685] x 100
Subtract the new number by the original number
398 - 685 = -287
-287 ÷ 685 = -0.41897810218978104
-0.41897810218978104 x 100 = -41.9%