-24.38% is the change from 685 to 518
Calculation steps:
[( 518 - 685 ) ÷ 685] x 100 = -24.38%
Formula
Percentage change = [(518 - 685) / 685] x 100
Subtract the new number by the original number
518 - 685 = -167
-167 ÷ 685 = -0.24379562043795622
-0.24379562043795622 x 100 = -24.38%