-64.58% is the change from 861 to 305
Calculation steps:
[( 305 - 861 ) ÷ 861] x 100 = -64.58%
Formula
Percentage change = [(305 - 861) / 861] x 100
Subtract the new number by the original number
305 - 861 = -556
-556 ÷ 861 = -0.645760743321719
-0.645760743321719 x 100 = -64.58%