-52.25% is the change from 823 to 393
Calculation steps:
[( 393 - 823 ) ÷ 823] x 100 = -52.25%
Formula
Percentage change = [(393 - 823) / 823] x 100
Subtract the new number by the original number
393 - 823 = -430
-430 ÷ 823 = -0.5224787363304981
-0.5224787363304981 x 100 = -52.25%