9.65% is the change from 228 to 250
Calculation steps:
[( 250 - 228 ) ÷ 228] x 100 = 9.65%
Formula
Percentage change = [(250 - 228) / 228] x 100
Subtract the new number by the original number
250 - 228 = 22
22 ÷ 228 = 0.09649122807017543
0.09649122807017543 x 100 = 9.65%