-16.92% is the change from 603 to 501
Calculation steps:
[( 501 - 603 ) ÷ 603] x 100 = -16.92%
Formula
Percentage change = [(501 - 603) / 603] x 100
Subtract the new number by the original number
501 - 603 = -102
-102 ÷ 603 = -0.1691542288557214
-0.1691542288557214 x 100 = -16.92%