-51.61% is the change from 806 to 390
Calculation steps:
[( 390 - 806 ) ÷ 806] x 100 = -51.61%
Formula
Percentage change = [(390 - 806) / 806] x 100
Subtract the new number by the original number
390 - 806 = -416
-416 ÷ 806 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%