-50% is the change from 288 to 144
Calculation steps:
[( 144 - 288 ) ÷ 288] x 100 = -50%
Formula
Percentage change = [(144 - 288) / 288] x 100
Subtract the new number by the original number
144 - 288 = -144
-144 ÷ 288 = -0.5
-0.5 x 100 = -50%
Example