10.53% is the change from 171 to 189
Calculation steps:
[( 189 - 171 ) ÷ 171] x 100 = 10.53%
Formula
Percentage change = [(189 - 171) / 171] x 100
Subtract the new number by the original number
189 - 171 = 18
18 ÷ 171 = 0.10526315789473684
0.10526315789473684 x 100 = 10.53%