-15.63% is the change from 806 to 680
Calculation steps:
[( 680 - 806 ) ÷ 806] x 100 = -15.63%
Formula
Percentage change = [(680 - 806) / 806] x 100
Subtract the new number by the original number
680 - 806 = -126
-126 ÷ 806 = -0.15632754342431762
-0.15632754342431762 x 100 = -15.63%