-32.64% is the change from 870 to 586
Calculation steps:
[( 586 - 870 ) ÷ 870] x 100 = -32.64%
Formula
Percentage change = [(586 - 870) / 870] x 100
Subtract the new number by the original number
586 - 870 = -284
-284 ÷ 870 = -0.3264367816091954
-0.3264367816091954 x 100 = -32.64%