6.29% is the change from 286 to 304
Calculation steps:
[( 304 - 286 ) ÷ 286] x 100 = 6.29%
Formula
Percentage change = [(304 - 286) / 286] x 100
Subtract the new number by the original number
304 - 286 = 18
18 ÷ 286 = 0.06293706293706294
0.06293706293706294 x 100 = 6.29%