31.19% is the change from 218 to 286
Calculation steps:
[( 286 - 218 ) ÷ 218] x 100 = 31.19%
Formula
Percentage change = [(286 - 218) / 218] x 100
Subtract the new number by the original number
286 - 218 = 68
68 ÷ 218 = 0.3119266055045872
0.3119266055045872 x 100 = 31.19%