129.24% is the change from 171 to 392
Calculation steps:
[( 392 - 171 ) ÷ 171] x 100 = 129.24%
Formula
Percentage change = [(392 - 171) / 171] x 100
Subtract the new number by the original number
392 - 171 = 221
221 ÷ 171 = 1.2923976608187135
1.2923976608187135 x 100 = 129.24%