-32.91% is the change from 866 to 581
Calculation steps:
[( 581 - 866 ) ÷ 866] x 100 = -32.91%
Formula
Percentage change = [(581 - 866) / 866] x 100
Subtract the new number by the original number
581 - 866 = -285
-285 ÷ 866 = -0.32909930715935337
-0.32909930715935337 x 100 = -32.91%