20.68% is the change from 503 to 607
Calculation steps:
[( 607 - 503 ) ÷ 503] x 100 = 20.68%
Formula
Percentage change = [(607 - 503) / 503] x 100
Subtract the new number by the original number
607 - 503 = 104
104 ÷ 503 = 0.20675944333996024
0.20675944333996024 x 100 = 20.68%