22.81% is the change from 228 to 280
Calculation steps:
[( 280 - 228 ) ÷ 228] x 100 = 22.81%
Formula
Percentage change = [(280 - 228) / 228] x 100
Subtract the new number by the original number
280 - 228 = 52
52 ÷ 228 = 0.22807017543859648
0.22807017543859648 x 100 = 22.81%