-49.64% is the change from 139 to 70
Calculation steps:
[( 70 - 139 ) ÷ 139] x 100 = -49.64%
Formula
Percentage change = [(70 - 139) / 139] x 100
Subtract the new number by the original number
70 - 139 = -69
-69 ÷ 139 = -0.49640287769784175
-0.49640287769784175 x 100 = -49.64%