-50% is the change from 112 to 56
Calculation steps:
[( 56 - 112 ) ÷ 112] x 100 = -50%
Formula
Percentage change = [(56 - 112) / 112] x 100
Subtract the new number by the original number
56 - 112 = -56
-56 ÷ 112 = -0.5
-0.5 x 100 = -50%
Example