-23.66% is the change from 879 to 671
Calculation steps:
[( 671 - 879 ) ÷ 879] x 100 = -23.66%
Formula
Percentage change = [(671 - 879) / 879] x 100
Subtract the new number by the original number
671 - 879 = -208
-208 ÷ 879 = -0.2366325369738339
-0.2366325369738339 x 100 = -23.66%