-14.94% is the change from 609 to 518
Calculation steps:
[( 518 - 609 ) ÷ 609] x 100 = -14.94%
Formula
Percentage change = [(518 - 609) / 609] x 100
Subtract the new number by the original number
518 - 609 = -91
-91 ÷ 609 = -0.14942528735632185
-0.14942528735632185 x 100 = -14.94%