-11.74% is the change from 690 to 609
Calculation steps:
[( 609 - 690 ) ÷ 690] x 100 = -11.74%
Formula
Percentage change = [(609 - 690) / 690] x 100
Subtract the new number by the original number
609 - 690 = -81
-81 ÷ 690 = -0.11739130434782609
-0.11739130434782609 x 100 = -11.74%