-20.04% is the change from 504 to 403
Calculation steps:
[( 403 - 504 ) ÷ 504] x 100 = -20.04%
Formula
Percentage change = [(403 - 504) / 504] x 100
Subtract the new number by the original number
403 - 504 = -101
-101 ÷ 504 = -0.2003968253968254
-0.2003968253968254 x 100 = -20.04%