18.86% is the change from 228 to 271
Calculation steps:
[( 271 - 228 ) ÷ 228] x 100 = 18.86%
Formula
Percentage change = [(271 - 228) / 228] x 100
Subtract the new number by the original number
271 - 228 = 43
43 ÷ 228 = 0.18859649122807018
0.18859649122807018 x 100 = 18.86%