-36.82% is the change from 823 to 520
Calculation steps:
[( 520 - 823 ) ÷ 823] x 100 = -36.82%
Formula
Percentage change = [(520 - 823) / 823] x 100
Subtract the new number by the original number
520 - 823 = -303
-303 ÷ 823 = -0.36816524908869985
-0.36816524908869985 x 100 = -36.82%