-33.37% is the change from 866 to 577
Calculation steps:
[( 577 - 866 ) ÷ 866] x 100 = -33.37%
Formula
Percentage change = [(577 - 866) / 866] x 100
Subtract the new number by the original number
577 - 866 = -289
-289 ÷ 866 = -0.33371824480369516
-0.33371824480369516 x 100 = -33.37%