-51.37% is the change from 146 to 71
Calculation steps:
[( 71 - 146 ) ÷ 146] x 100 = -51.37%
Formula
Percentage change = [(71 - 146) / 146] x 100
Subtract the new number by the original number
71 - 146 = -75
-75 ÷ 146 = -0.5136986301369864
-0.5136986301369864 x 100 = -51.37%