-31.76% is the change from 866 to 591
Calculation steps:
[( 591 - 866 ) ÷ 866] x 100 = -31.76%
Formula
Percentage change = [(591 - 866) / 866] x 100
Subtract the new number by the original number
591 - 866 = -275
-275 ÷ 866 = -0.31755196304849886
-0.31755196304849886 x 100 = -31.76%