-55.56% is the change from 54 to 24
Calculation steps:
[( 24 - 54 ) ÷ 54] x 100 = -55.56%
Formula
Percentage change = [(24 - 54) / 54] x 100
Subtract the new number by the original number
24 - 54 = -30
-30 ÷ 54 = -0.5555555555555556
-0.5555555555555556 x 100 = -55.56%