-59.65% is the change from 518 to 209
Calculation steps:
[( 209 - 518 ) ÷ 518] x 100 = -59.65%
Formula
Percentage change = [(209 - 518) / 518] x 100
Subtract the new number by the original number
209 - 518 = -309
-309 ÷ 518 = -0.5965250965250966
-0.5965250965250966 x 100 = -59.65%