-17.25% is the change from 806 to 667
Calculation steps:
[( 667 - 806 ) ÷ 806] x 100 = -17.25%
Formula
Percentage change = [(667 - 806) / 806] x 100
Subtract the new number by the original number
667 - 806 = -139
-139 ÷ 806 = -0.17245657568238212
-0.17245657568238212 x 100 = -17.25%