30.58% is the change from 242 to 316
Calculation steps:
[( 316 - 242 ) ÷ 242] x 100 = 30.58%
Formula
Percentage change = [(316 - 242) / 242] x 100
Subtract the new number by the original number
316 - 242 = 74
74 ÷ 242 = 0.30578512396694213
0.30578512396694213 x 100 = 30.58%