-29.58% is the change from 879 to 619
Calculation steps:
[( 619 - 879 ) ÷ 879] x 100 = -29.58%
Formula
Percentage change = [(619 - 879) / 879] x 100
Subtract the new number by the original number
619 - 879 = -260
-260 ÷ 879 = -0.29579067121729236
-0.29579067121729236 x 100 = -29.58%