-11.35% is the change from 687 to 609
Calculation steps:
[( 609 - 687 ) ÷ 687] x 100 = -11.35%
Formula
Percentage change = [(609 - 687) / 687] x 100
Subtract the new number by the original number
609 - 687 = -78
-78 ÷ 687 = -0.11353711790393013
-0.11353711790393013 x 100 = -11.35%