-2.96% is the change from 709 to 688
Calculation steps:
[( 688 - 709 ) ÷ 709] x 100 = -2.96%
Formula
Percentage change = [(688 - 709) / 709] x 100
Subtract the new number by the original number
688 - 709 = -21
-21 ÷ 709 = -0.029619181946403384
-0.029619181946403384 x 100 = -2.96%