-15.48% is the change from 814 to 688
Calculation steps:
[( 688 - 814 ) ÷ 814] x 100 = -15.48%
Formula
Percentage change = [(688 - 814) / 814] x 100
Subtract the new number by the original number
688 - 814 = -126
-126 ÷ 814 = -0.1547911547911548
-0.1547911547911548 x 100 = -15.48%