-68.34% is the change from 518 to 164
Calculation steps:
[( 164 - 518 ) ÷ 518] x 100 = -68.34%
Formula
Percentage change = [(164 - 518) / 518] x 100
Subtract the new number by the original number
164 - 518 = -354
-354 ÷ 518 = -0.6833976833976834
-0.6833976833976834 x 100 = -68.34%