-40.83% is the change from 823 to 487
Calculation steps:
[( 487 - 823 ) ÷ 823] x 100 = -40.83%
Formula
Percentage change = [(487 - 823) / 823] x 100
Subtract the new number by the original number
487 - 823 = -336
-336 ÷ 823 = -0.4082624544349939
-0.4082624544349939 x 100 = -40.83%