-14.78% is the change from 609 to 519
Calculation steps:
[( 519 - 609 ) ÷ 609] x 100 = -14.78%
Formula
Percentage change = [(519 - 609) / 609] x 100
Subtract the new number by the original number
519 - 609 = -90
-90 ÷ 609 = -0.1477832512315271
-0.1477832512315271 x 100 = -14.78%