-17.37% is the change from 616 to 509
Calculation steps:
[( 509 - 616 ) ÷ 616] x 100 = -17.37%
Formula
Percentage change = [(509 - 616) / 616] x 100
Subtract the new number by the original number
509 - 616 = -107
-107 ÷ 616 = -0.1737012987012987
-0.1737012987012987 x 100 = -17.37%