-11.09% is the change from 685 to 609
Calculation steps:
[( 609 - 685 ) ÷ 685] x 100 = -11.09%
Formula
Percentage change = [(609 - 685) / 685] x 100
Subtract the new number by the original number
609 - 685 = -76
-76 ÷ 685 = -0.11094890510948906
-0.11094890510948906 x 100 = -11.09%