1.32% is the change from 228 to 231
Calculation steps:
[( 231 - 228 ) ÷ 228] x 100 = 1.32%
Formula
Percentage change = [(231 - 228) / 228] x 100
Subtract the new number by the original number
231 - 228 = 3
3 ÷ 228 = 0.013157894736842105
0.013157894736842105 x 100 = 1.32%