-50% is the change from 244 to 122
Calculation steps:
[( 122 - 244 ) ÷ 244] x 100 = -50%
Formula
Percentage change = [(122 - 244) / 244] x 100
Subtract the new number by the original number
122 - 244 = -122
-122 ÷ 244 = -0.5
-0.5 x 100 = -50%
Example