-75.93% is the change from 54 to 13
Calculation steps:
[( 13 - 54 ) ÷ 54] x 100 = -75.93%
Formula
Percentage change = [(13 - 54) / 54] x 100
Subtract the new number by the original number
13 - 54 = -41
-41 ÷ 54 = -0.7592592592592593
-0.7592592592592593 x 100 = -75.93%