14.29% is the change from 266 to 304
Calculation steps:
[( 304 - 266 ) ÷ 266] x 100 = 14.29%
Formula
Percentage change = [(304 - 266) / 266] x 100
Subtract the new number by the original number
304 - 266 = 38
38 ÷ 266 = 0.14285714285714285
0.14285714285714285 x 100 = 14.29%