-50.36% is the change from 139 to 69
Calculation steps:
[( 69 - 139 ) ÷ 139] x 100 = -50.36%
Formula
Percentage change = [(69 - 139) / 139] x 100
Subtract the new number by the original number
69 - 139 = -70
-70 ÷ 139 = -0.5035971223021583
-0.5035971223021583 x 100 = -50.36%