-6.88% is the change from 770 to 717
Calculation steps:
[( 717 - 770 ) ÷ 770] x 100 = -6.88%
Formula
Percentage change = [(717 - 770) / 770] x 100
Subtract the new number by the original number
717 - 770 = -53
-53 ÷ 770 = -0.06883116883116883
-0.06883116883116883 x 100 = -6.88%