-11.34% is the change from 97 to 86
Calculation steps:
[( 86 - 97 ) ÷ 97] x 100 = -11.34%
Formula
Percentage change = [(86 - 97) / 97] x 100
Subtract the new number by the original number
86 - 97 = -11
-11 ÷ 97 = -0.1134020618556701
-0.1134020618556701 x 100 = -11.34%