34% is the change from 503 to 674
Calculation steps:
[( 674 - 503 ) ÷ 503] x 100 = 34%
Formula
Percentage change = [(674 - 503) / 503] x 100
Subtract the new number by the original number
674 - 503 = 171
171 ÷ 503 = 0.3399602385685885
0.3399602385685885 x 100 = 34%