-38.13% is the change from 139 to 86
Calculation steps:
[( 86 - 139 ) ÷ 139] x 100 = -38.13%
Formula
Percentage change = [(86 - 139) / 139] x 100
Subtract the new number by the original number
86 - 139 = -53
-53 ÷ 139 = -0.381294964028777
-0.381294964028777 x 100 = -38.13%