-47.06% is the change from 153 to 81
Calculation steps:
[( 81 - 153 ) ÷ 153] x 100 = -47.06%
Formula
Percentage change = [(81 - 153) / 153] x 100
Subtract the new number by the original number
81 - 153 = -72
-72 ÷ 153 = -0.47058823529411764
-0.47058823529411764 x 100 = -47.06%