-37.41% is the change from 139 to 87
Calculation steps:
[( 87 - 139 ) ÷ 139] x 100 = -37.41%
Formula
Percentage change = [(87 - 139) / 139] x 100
Subtract the new number by the original number
87 - 139 = -52
-52 ÷ 139 = -0.37410071942446044
-0.37410071942446044 x 100 = -37.41%