-17.17% is the change from 827 to 685
Calculation steps:
[( 685 - 827 ) ÷ 827] x 100 = -17.17%
Formula
Percentage change = [(685 - 827) / 827] x 100
Subtract the new number by the original number
685 - 827 = -142
-142 ÷ 827 = -0.1717049576783555
-0.1717049576783555 x 100 = -17.17%