-82.02% is the change from 684 to 123
Calculation steps:
[( 123 - 684 ) ÷ 684] x 100 = -82.02%
Formula
Percentage change = [(123 - 684) / 684] x 100
Subtract the new number by the original number
123 - 684 = -561
-561 ÷ 684 = -0.8201754385964912
-0.8201754385964912 x 100 = -82.02%