98.83% is the change from 171 to 340
Calculation steps:
[( 340 - 171 ) ÷ 171] x 100 = 98.83%
Formula
Percentage change = [(340 - 171) / 171] x 100
Subtract the new number by the original number
340 - 171 = 169
169 ÷ 171 = 0.9883040935672515
0.9883040935672515 x 100 = 98.83%