-47.06% is the change from 102 to 54
Calculation steps:
[( 54 - 102 ) ÷ 102] x 100 = -47.06%
Formula
Percentage change = [(54 - 102) / 102] x 100
Subtract the new number by the original number
54 - 102 = -48
-48 ÷ 102 = -0.47058823529411764
-0.47058823529411764 x 100 = -47.06%