-10.71% is the change from 504 to 450
Calculation steps:
[( 450 - 504 ) ÷ 504] x 100 = -10.71%
Formula
Percentage change = [(450 - 504) / 504] x 100
Subtract the new number by the original number
450 - 504 = -54
-54 ÷ 504 = -0.10714285714285714
-0.10714285714285714 x 100 = -10.71%