-23.98% is the change from 663 to 504
Calculation steps:
[( 504 - 663 ) ÷ 663] x 100 = -23.98%
Formula
Percentage change = [(504 - 663) / 663] x 100
Subtract the new number by the original number
504 - 663 = -159
-159 ÷ 663 = -0.2398190045248869
-0.2398190045248869 x 100 = -23.98%