-44.47% is the change from 823 to 457
Calculation steps:
[( 457 - 823 ) ÷ 823] x 100 = -44.47%
Formula
Percentage change = [(457 - 823) / 823] x 100
Subtract the new number by the original number
457 - 823 = -366
-366 ÷ 823 = -0.44471445929526127
-0.44471445929526127 x 100 = -44.47%