-24.27% is the change from 684 to 518
Calculation steps:
[( 518 - 684 ) ÷ 684] x 100 = -24.27%
Formula
Percentage change = [(518 - 684) / 684] x 100
Subtract the new number by the original number
518 - 684 = -166
-166 ÷ 684 = -0.24269005847953215
-0.24269005847953215 x 100 = -24.27%