-38.27% is the change from 823 to 508
Calculation steps:
[( 508 - 823 ) ÷ 823] x 100 = -38.27%
Formula
Percentage change = [(508 - 823) / 823] x 100
Subtract the new number by the original number
508 - 823 = -315
-315 ÷ 823 = -0.3827460510328068
-0.3827460510328068 x 100 = -38.27%