31.58% is the change from 266 to 350
Calculation steps:
[( 350 - 266 ) ÷ 266] x 100 = 31.58%
Formula
Percentage change = [(350 - 266) / 266] x 100
Subtract the new number by the original number
350 - 266 = 84
84 ÷ 266 = 0.3157894736842105
0.3157894736842105 x 100 = 31.58%