126.9% is the change from 171 to 388
Calculation steps:
[( 388 - 171 ) ÷ 171] x 100 = 126.9%
Formula
Percentage change = [(388 - 171) / 171] x 100
Subtract the new number by the original number
388 - 171 = 217
217 ÷ 171 = 1.2690058479532165
1.2690058479532165 x 100 = 126.9%