-30.48% is the change from 866 to 602
Calculation steps:
[( 602 - 866 ) ÷ 866] x 100 = -30.48%
Formula
Percentage change = [(602 - 866) / 866] x 100
Subtract the new number by the original number
602 - 866 = -264
-264 ÷ 866 = -0.30484988452655887
-0.30484988452655887 x 100 = -30.48%