-30.77% is the change from 871 to 603
Calculation steps:
[( 603 - 871 ) ÷ 871] x 100 = -30.77%
Formula
Percentage change = [(603 - 871) / 871] x 100
Subtract the new number by the original number
603 - 871 = -268
-268 ÷ 871 = -0.3076923076923077
-0.3076923076923077 x 100 = -30.77%