-45.27% is the change from 148 to 81
Calculation steps:
[( 81 - 148 ) ÷ 148] x 100 = -45.27%
Formula
Percentage change = [(81 - 148) / 148] x 100
Subtract the new number by the original number
81 - 148 = -67
-67 ÷ 148 = -0.4527027027027027
-0.4527027027027027 x 100 = -45.27%