-61.56% is the change from 861 to 331
Calculation steps:
[( 331 - 861 ) ÷ 861] x 100 = -61.56%
Formula
Percentage change = [(331 - 861) / 861] x 100
Subtract the new number by the original number
331 - 861 = -530
-530 ÷ 861 = -0.6155632984901278
-0.6155632984901278 x 100 = -61.56%