-86.17% is the change from 94 to 13
Calculation steps:
[( 13 - 94 ) ÷ 94] x 100 = -86.17%
Formula
Percentage change = [(13 - 94) / 94] x 100
Subtract the new number by the original number
13 - 94 = -81
-81 ÷ 94 = -0.8617021276595744
-0.8617021276595744 x 100 = -86.17%