-41.52% is the change from 684 to 400
Calculation steps:
[( 400 - 684 ) ÷ 684] x 100 = -41.52%
Formula
Percentage change = [(400 - 684) / 684] x 100
Subtract the new number by the original number
400 - 684 = -284
-284 ÷ 684 = -0.4152046783625731
-0.4152046783625731 x 100 = -41.52%