97.67% is the change from 86 to 170
Calculation steps:
[( 170 - 86 ) ÷ 86] x 100 = 97.67%
Formula
Percentage change = [(170 - 86) / 86] x 100
Subtract the new number by the original number
170 - 86 = 84
84 ÷ 86 = 0.9767441860465116
0.9767441860465116 x 100 = 97.67%