-26.02% is the change from 684 to 506
Calculation steps:
[( 506 - 684 ) ÷ 684] x 100 = -26.02%
Formula
Percentage change = [(506 - 684) / 684] x 100
Subtract the new number by the original number
506 - 684 = -178
-178 ÷ 684 = -0.260233918128655
-0.260233918128655 x 100 = -26.02%