18.35% is the change from 218 to 258
Calculation steps:
[( 258 - 218 ) ÷ 218] x 100 = 18.35%
Formula
Percentage change = [(258 - 218) / 218] x 100
Subtract the new number by the original number
258 - 218 = 40
40 ÷ 218 = 0.1834862385321101
0.1834862385321101 x 100 = 18.35%