-67.57% is the change from 518 to 168
Calculation steps:
[( 168 - 518 ) ÷ 518] x 100 = -67.57%
Formula
Percentage change = [(168 - 518) / 518] x 100
Subtract the new number by the original number
168 - 518 = -350
-350 ÷ 518 = -0.6756756756756757
-0.6756756756756757 x 100 = -67.57%