-27.87% is the change from 861 to 621
Calculation steps:
[( 621 - 861 ) ÷ 861] x 100 = -27.87%
Formula
Percentage change = [(621 - 861) / 861] x 100
Subtract the new number by the original number
621 - 861 = -240
-240 ÷ 861 = -0.2787456445993031
-0.2787456445993031 x 100 = -27.87%