-18.34% is the change from 518 to 423
Calculation steps:
[( 423 - 518 ) ÷ 518] x 100 = -18.34%
Formula
Percentage change = [(423 - 518) / 518] x 100
Subtract the new number by the original number
423 - 518 = -95
-95 ÷ 518 = -0.1833976833976834
-0.1833976833976834 x 100 = -18.34%