85.96% is the change from 171 to 318
Calculation steps:
[( 318 - 171 ) ÷ 171] x 100 = 85.96%
Formula
Percentage change = [(318 - 171) / 171] x 100
Subtract the new number by the original number
318 - 171 = 147
147 ÷ 171 = 0.8596491228070176
0.8596491228070176 x 100 = 85.96%