19.64% is the change from 504 to 603
Calculation steps:
[( 603 - 504 ) ÷ 504] x 100 = 19.64%
Formula
Percentage change = [(603 - 504) / 504] x 100
Subtract the new number by the original number
603 - 504 = 99
99 ÷ 504 = 0.19642857142857142
0.19642857142857142 x 100 = 19.64%