-16.79% is the change from 685 to 570
Calculation steps:
[( 570 - 685 ) ÷ 685] x 100 = -16.79%
Formula
Percentage change = [(570 - 685) / 685] x 100
Subtract the new number by the original number
570 - 685 = -115
-115 ÷ 685 = -0.1678832116788321
-0.1678832116788321 x 100 = -16.79%