-83.72% is the change from 86 to 14
Calculation steps:
[( 14 - 86 ) ÷ 86] x 100 = -83.72%
Formula
Percentage change = [(14 - 86) / 86] x 100
Subtract the new number by the original number
14 - 86 = -72
-72 ÷ 86 = -0.8372093023255814
-0.8372093023255814 x 100 = -83.72%