-14.96% is the change from 809 to 688
Calculation steps:
[( 688 - 809 ) ÷ 809] x 100 = -14.96%
Formula
Percentage change = [(688 - 809) / 809] x 100
Subtract the new number by the original number
688 - 809 = -121
-121 ÷ 809 = -0.14956736711990112
-0.14956736711990112 x 100 = -14.96%