20.61% is the change from 228 to 275
Calculation steps:
[( 275 - 228 ) ÷ 228] x 100 = 20.61%
Formula
Percentage change = [(275 - 228) / 228] x 100
Subtract the new number by the original number
275 - 228 = 47
47 ÷ 228 = 0.20614035087719298
0.20614035087719298 x 100 = 20.61%