34.49% is the change from 374 to 503
Calculation steps:
[( 503 - 374 ) ÷ 374] x 100 = 34.49%
Formula
Percentage change = [(503 - 374) / 374] x 100
Subtract the new number by the original number
503 - 374 = 129
129 ÷ 374 = 0.3449197860962567
0.3449197860962567 x 100 = 34.49%