-85.61% is the change from 139 to 20
Calculation steps:
[( 20 - 139 ) ÷ 139] x 100 = -85.61%
Formula
Percentage change = [(20 - 139) / 139] x 100
Subtract the new number by the original number
20 - 139 = -119
-119 ÷ 139 = -0.8561151079136691
-0.8561151079136691 x 100 = -85.61%