40.32% is the change from 248 to 348
Calculation steps:
[( 348 - 248 ) ÷ 248] x 100 = 40.32%
Formula
Percentage change = [(348 - 248) / 248] x 100
Subtract the new number by the original number
348 - 248 = 100
100 ÷ 248 = 0.4032258064516129
0.4032258064516129 x 100 = 40.32%