-43.07% is the change from 866 to 493
Calculation steps:
[( 493 - 866 ) ÷ 866] x 100 = -43.07%
Formula
Percentage change = [(493 - 866) / 866] x 100
Subtract the new number by the original number
493 - 866 = -373
-373 ÷ 866 = -0.43071593533487296
-0.43071593533487296 x 100 = -43.07%