-5.81% is the change from 86 to 81
Calculation steps:
[( 81 - 86 ) ÷ 86] x 100 = -5.81%
Formula
Percentage change = [(81 - 86) / 86] x 100
Subtract the new number by the original number
81 - 86 = -5
-5 ÷ 86 = -0.05813953488372093
-0.05813953488372093 x 100 = -5.81%