38.6% is the change from 171 to 237
Calculation steps:
[( 237 - 171 ) ÷ 171] x 100 = 38.6%
Formula
Percentage change = [(237 - 171) / 171] x 100
Subtract the new number by the original number
237 - 171 = 66
66 ÷ 171 = 0.38596491228070173
0.38596491228070173 x 100 = 38.6%