15.3% is the change from 523 to 603
Calculation steps:
[( 603 - 523 ) ÷ 523] x 100 = 15.3%
Formula
Percentage change = [(603 - 523) / 523] x 100
Subtract the new number by the original number
603 - 523 = 80
80 ÷ 523 = 0.15296367112810708
0.15296367112810708 x 100 = 15.3%