-36.22% is the change from 127 to 81
Calculation steps:
[( 81 - 127 ) ÷ 127] x 100 = -36.22%
Formula
Percentage change = [(81 - 127) / 127] x 100
Subtract the new number by the original number
81 - 127 = -46
-46 ÷ 127 = -0.36220472440944884
-0.36220472440944884 x 100 = -36.22%