31.82% is the change from 242 to 319
Calculation steps:
[( 319 - 242 ) ÷ 242] x 100 = 31.82%
Formula
Percentage change = [(319 - 242) / 242] x 100
Subtract the new number by the original number
319 - 242 = 77
77 ÷ 242 = 0.3181818181818182
0.3181818181818182 x 100 = 31.82%