86.47% is the change from 170 to 317
Calculation steps:
[( 317 - 170 ) ÷ 170] x 100 = 86.47%
Formula
Percentage change = [(317 - 170) / 170] x 100
Subtract the new number by the original number
317 - 170 = 147
147 ÷ 170 = 0.8647058823529412
0.8647058823529412 x 100 = 86.47%
Example