-28.06% is the change from 866 to 623
Calculation steps:
[( 623 - 866 ) ÷ 866] x 100 = -28.06%
Formula
Percentage change = [(623 - 866) / 866] x 100
Subtract the new number by the original number
623 - 866 = -243
-243 ÷ 866 = -0.2806004618937644
-0.2806004618937644 x 100 = -28.06%