-54.82% is the change from 684 to 309
Calculation steps:
[( 309 - 684 ) ÷ 684] x 100 = -54.82%
Formula
Percentage change = [(309 - 684) / 684] x 100
Subtract the new number by the original number
309 - 684 = -375
-375 ÷ 684 = -0.5482456140350878
-0.5482456140350878 x 100 = -54.82%