-38.91% is the change from 825 to 504
Calculation steps:
[( 504 - 825 ) ÷ 825] x 100 = -38.91%
Formula
Percentage change = [(504 - 825) / 825] x 100
Subtract the new number by the original number
504 - 825 = -321
-321 ÷ 825 = -0.3890909090909091
-0.3890909090909091 x 100 = -38.91%