-17.68% is the change from 826 to 680
Calculation steps:
[( 680 - 826 ) ÷ 826] x 100 = -17.68%
Formula
Percentage change = [(680 - 826) / 826] x 100
Subtract the new number by the original number
680 - 826 = -146
-146 ÷ 826 = -0.17675544794188863
-0.17675544794188863 x 100 = -17.68%