-31.4% is the change from 879 to 603
Calculation steps:
[( 603 - 879 ) ÷ 879] x 100 = -31.4%
Formula
Percentage change = [(603 - 879) / 879] x 100
Subtract the new number by the original number
603 - 879 = -276
-276 ÷ 879 = -0.31399317406143346
-0.31399317406143346 x 100 = -31.4%