19.28% is the change from 503 to 600
Calculation steps:
[( 600 - 503 ) ÷ 503] x 100 = 19.28%
Formula
Percentage change = [(600 - 503) / 503] x 100
Subtract the new number by the original number
600 - 503 = 97
97 ÷ 503 = 0.19284294234592445
0.19284294234592445 x 100 = 19.28%