-19.35% is the change from 827 to 667
Calculation steps:
[( 667 - 827 ) ÷ 827] x 100 = -19.35%
Formula
Percentage change = [(667 - 827) / 827] x 100
Subtract the new number by the original number
667 - 827 = -160
-160 ÷ 827 = -0.19347037484885127
-0.19347037484885127 x 100 = -19.35%