-56% is the change from 50 to 22
Calculation steps:
[( 22 - 50 ) ÷ 50] x 100 = -56%
Formula
Percentage change = [(22 - 50) / 50] x 100
Subtract the new number by the original number
22 - 50 = -28
-28 ÷ 50 = -0.56
-0.56 x 100 = -56%
Example