-40.73% is the change from 685 to 406
Calculation steps:
[( 406 - 685 ) ÷ 685] x 100 = -40.73%
Formula
Percentage change = [(406 - 685) / 685] x 100
Subtract the new number by the original number
406 - 685 = -279
-279 ÷ 685 = -0.4072992700729927
-0.4072992700729927 x 100 = -40.73%