-78.91% is the change from 806 to 170
Calculation steps:
[( 170 - 806 ) ÷ 806] x 100 = -78.91%
Formula
Percentage change = [(170 - 806) / 806] x 100
Subtract the new number by the original number
170 - 806 = -636
-636 ÷ 806 = -0.7890818858560794
-0.7890818858560794 x 100 = -78.91%