-82.11% is the change from 816 to 146
Calculation steps:
[( 146 - 816 ) ÷ 816] x 100 = -82.11%
Formula
Percentage change = [(146 - 816) / 816] x 100
Subtract the new number by the original number
146 - 816 = -670
-670 ÷ 816 = -0.821078431372549
-0.821078431372549 x 100 = -82.11%