-75.54% is the change from 139 to 34
Calculation steps:
[( 34 - 139 ) ÷ 139] x 100 = -75.54%
Formula
Percentage change = [(34 - 139) / 139] x 100
Subtract the new number by the original number
34 - 139 = -105
-105 ÷ 139 = -0.7553956834532374
-0.7553956834532374 x 100 = -75.54%