-81.76% is the change from 806 to 147
Calculation steps:
[( 147 - 806 ) ÷ 806] x 100 = -81.76%
Formula
Percentage change = [(147 - 806) / 806] x 100
Subtract the new number by the original number
147 - 806 = -659
-659 ÷ 806 = -0.8176178660049628
-0.8176178660049628 x 100 = -81.76%