-4.5% is the change from 600 to 573
Calculation steps:
[( 573 - 600 ) ÷ 600] x 100 = -4.5%
Formula
Percentage change = [(573 - 600) / 600] x 100
Subtract the new number by the original number
573 - 600 = -27
-27 ÷ 600 = -0.045
-0.045 x 100 = -4.5%
Example