-81.51% is the change from 806 to 149
Calculation steps:
[( 149 - 806 ) ÷ 806] x 100 = -81.51%
Formula
Percentage change = [(149 - 806) / 806] x 100
Subtract the new number by the original number
149 - 806 = -657
-657 ÷ 806 = -0.815136476426799
-0.815136476426799 x 100 = -81.51%