40.49% is the change from 247 to 347
Calculation steps:
[( 347 - 247 ) ÷ 247] x 100 = 40.49%
Formula
Percentage change = [(347 - 247) / 247] x 100
Subtract the new number by the original number
347 - 247 = 100
100 ÷ 247 = 0.4048582995951417
0.4048582995951417 x 100 = 40.49%