-7.92% is the change from 770 to 709
Calculation steps:
[( 709 - 770 ) ÷ 770] x 100 = -7.92%
Formula
Percentage change = [(709 - 770) / 770] x 100
Subtract the new number by the original number
709 - 770 = -61
-61 ÷ 770 = -0.07922077922077922
-0.07922077922077922 x 100 = -7.92%