173.74% is the change from 99 to 271
Calculation steps:
[( 271 - 99 ) ÷ 99] x 100 = 173.74%
Formula
Percentage change = [(271 - 99) / 99] x 100
Subtract the new number by the original number
271 - 99 = 172
172 ÷ 99 = 1.7373737373737375
1.7373737373737375 x 100 = 173.74%