-30.77% is the change from 78 to 54
Calculation steps:
[( 54 - 78 ) ÷ 78] x 100 = -30.77%
Formula
Percentage change = [(54 - 78) / 78] x 100
Subtract the new number by the original number
54 - 78 = -24
-24 ÷ 78 = -0.3076923076923077
-0.3076923076923077 x 100 = -30.77%