8.74% is the change from 286 to 311
Calculation steps:
[( 311 - 286 ) ÷ 286] x 100 = 8.74%
Formula
Percentage change = [(311 - 286) / 286] x 100
Subtract the new number by the original number
311 - 286 = 25
25 ÷ 286 = 0.08741258741258741
0.08741258741258741 x 100 = 8.74%