-40.1% is the change from 823 to 493
Calculation steps:
[( 493 - 823 ) ÷ 823] x 100 = -40.1%
Formula
Percentage change = [(493 - 823) / 823] x 100
Subtract the new number by the original number
493 - 823 = -330
-330 ÷ 823 = -0.40097205346294046
-0.40097205346294046 x 100 = -40.1%