15.73% is the change from 286 to 331
Calculation steps:
[( 331 - 286 ) ÷ 286] x 100 = 15.73%
Formula
Percentage change = [(331 - 286) / 286] x 100
Subtract the new number by the original number
331 - 286 = 45
45 ÷ 286 = 0.15734265734265734
0.15734265734265734 x 100 = 15.73%