30.99% is the change from 384 to 503
Calculation steps:
[( 503 - 384 ) ÷ 384] x 100 = 30.99%
Formula
Percentage change = [(503 - 384) / 384] x 100
Subtract the new number by the original number
503 - 384 = 119
119 ÷ 384 = 0.3098958333333333
0.3098958333333333 x 100 = 30.99%