20.28% is the change from 286 to 344
Calculation steps:
[( 344 - 286 ) ÷ 286] x 100 = 20.28%
Formula
Percentage change = [(344 - 286) / 286] x 100
Subtract the new number by the original number
344 - 286 = 58
58 ÷ 286 = 0.20279720279720279
0.20279720279720279 x 100 = 20.28%