28.81% is the change from 177 to 228
Calculation steps:
[( 228 - 177 ) ÷ 177] x 100 = 28.81%
Formula
Percentage change = [(228 - 177) / 177] x 100
Subtract the new number by the original number
228 - 177 = 51
51 ÷ 177 = 0.288135593220339
0.288135593220339 x 100 = 28.81%