-16.42% is the change from 603 to 504
Calculation steps:
[( 504 - 603 ) ÷ 603] x 100 = -16.42%
Formula
Percentage change = [(504 - 603) / 603] x 100
Subtract the new number by the original number
504 - 603 = -99
-99 ÷ 603 = -0.16417910447761194
-0.16417910447761194 x 100 = -16.42%