-81.89% is the change from 806 to 146
Calculation steps:
[( 146 - 806 ) ÷ 806] x 100 = -81.89%
Formula
Percentage change = [(146 - 806) / 806] x 100
Subtract the new number by the original number
146 - 806 = -660
-660 ÷ 806 = -0.8188585607940446
-0.8188585607940446 x 100 = -81.89%