39.11% is the change from 248 to 345
Calculation steps:
[( 345 - 248 ) ÷ 248] x 100 = 39.11%
Formula
Percentage change = [(345 - 248) / 248] x 100
Subtract the new number by the original number
345 - 248 = 97
97 ÷ 248 = 0.3911290322580645
0.3911290322580645 x 100 = 39.11%