-39.06% is the change from 827 to 504
Calculation steps:
[( 504 - 827 ) ÷ 827] x 100 = -39.06%
Formula
Percentage change = [(504 - 827) / 827] x 100
Subtract the new number by the original number
504 - 827 = -323
-323 ÷ 827 = -0.3905683192261185
-0.3905683192261185 x 100 = -39.06%