30.71% is the change from 241 to 315
Calculation steps:
[( 315 - 241 ) ÷ 241] x 100 = 30.71%
Formula
Percentage change = [(315 - 241) / 241] x 100
Subtract the new number by the original number
315 - 241 = 74
74 ÷ 241 = 0.3070539419087137
0.3070539419087137 x 100 = 30.71%