171.76% is the change from 85 to 231
Calculation steps:
[( 231 - 85 ) ÷ 85] x 100 = 171.76%
Formula
Percentage change = [(231 - 85) / 85] x 100
Subtract the new number by the original number
231 - 85 = 146
146 ÷ 85 = 1.7176470588235293
1.7176470588235293 x 100 = 171.76%