-17.91% is the change from 603 to 495
Calculation steps:
[( 495 - 603 ) ÷ 603] x 100 = -17.91%
Formula
Percentage change = [(495 - 603) / 603] x 100
Subtract the new number by the original number
495 - 603 = -108
-108 ÷ 603 = -0.1791044776119403
-0.1791044776119403 x 100 = -17.91%