15.74% is the change from 197 to 228
Calculation steps:
[( 228 - 197 ) ÷ 197] x 100 = 15.74%
Formula
Percentage change = [(228 - 197) / 197] x 100
Subtract the new number by the original number
228 - 197 = 31
31 ÷ 197 = 0.15736040609137056
0.15736040609137056 x 100 = 15.74%