-58.14% is the change from 129 to 54
Calculation steps:
[( 54 - 129 ) ÷ 129] x 100 = -58.14%
Formula
Percentage change = [(54 - 129) / 129] x 100
Subtract the new number by the original number
54 - 129 = -75
-75 ÷ 129 = -0.5813953488372093
-0.5813953488372093 x 100 = -58.14%