-31.18% is the change from 866 to 596
Calculation steps:
[( 596 - 866 ) ÷ 866] x 100 = -31.18%
Formula
Percentage change = [(596 - 866) / 866] x 100
Subtract the new number by the original number
596 - 866 = -270
-270 ÷ 866 = -0.3117782909930716
-0.3117782909930716 x 100 = -31.18%