-54.79% is the change from 146 to 66
Calculation steps:
[( 66 - 146 ) ÷ 146] x 100 = -54.79%
Formula
Percentage change = [(66 - 146) / 146] x 100
Subtract the new number by the original number
66 - 146 = -80
-80 ÷ 146 = -0.547945205479452
-0.547945205479452 x 100 = -54.79%