-30.22% is the change from 139 to 97
Calculation steps:
[( 97 - 139 ) ÷ 139] x 100 = -30.22%
Formula
Percentage change = [(97 - 139) / 139] x 100
Subtract the new number by the original number
97 - 139 = -42
-42 ÷ 139 = -0.302158273381295
-0.302158273381295 x 100 = -30.22%