-40.79% is the change from 684 to 405
Calculation steps:
[( 405 - 684 ) ÷ 684] x 100 = -40.79%
Formula
Percentage change = [(405 - 684) / 684] x 100
Subtract the new number by the original number
405 - 684 = -279
-279 ÷ 684 = -0.40789473684210525
-0.40789473684210525 x 100 = -40.79%