44.54% is the change from 348 to 503
Calculation steps:
[( 503 - 348 ) ÷ 348] x 100 = 44.54%
Formula
Percentage change = [(503 - 348) / 348] x 100
Subtract the new number by the original number
503 - 348 = 155
155 ÷ 348 = 0.4454022988505747
0.4454022988505747 x 100 = 44.54%