18.67% is the change from 166 to 197
Calculation steps:
[( 197 - 166 ) ÷ 166] x 100 = 18.67%
Formula
Percentage change = [(197 - 166) / 166] x 100
Subtract the new number by the original number
197 - 166 = 31
31 ÷ 166 = 0.18674698795180722
0.18674698795180722 x 100 = 18.67%