27.02% is the change from 396 to 503
Calculation steps:
[( 503 - 396 ) ÷ 396] x 100 = 27.02%
Formula
Percentage change = [(503 - 396) / 396] x 100
Subtract the new number by the original number
503 - 396 = 107
107 ÷ 396 = 0.2702020202020202
0.2702020202020202 x 100 = 27.02%