12.4% is the change from 242 to 272
Calculation steps:
[( 272 - 242 ) ÷ 242] x 100 = 12.4%
Formula
Percentage change = [(272 - 242) / 242] x 100
Subtract the new number by the original number
272 - 242 = 30
30 ÷ 242 = 0.12396694214876033
0.12396694214876033 x 100 = 12.4%