-17.41% is the change from 609 to 503
Calculation steps:
[( 503 - 609 ) ÷ 609] x 100 = -17.41%
Formula
Percentage change = [(503 - 609) / 609] x 100
Subtract the new number by the original number
503 - 609 = -106
-106 ÷ 609 = -0.17405582922824303
-0.17405582922824303 x 100 = -17.41%