-17.08% is the change from 603 to 500
Calculation steps:
[( 500 - 603 ) ÷ 603] x 100 = -17.08%
Formula
Percentage change = [(500 - 603) / 603] x 100
Subtract the new number by the original number
500 - 603 = -103
-103 ÷ 603 = -0.17081260364842454
-0.17081260364842454 x 100 = -17.08%