-6.75% is the change from 770 to 718
Calculation steps:
[( 718 - 770 ) ÷ 770] x 100 = -6.75%
Formula
Percentage change = [(718 - 770) / 770] x 100
Subtract the new number by the original number
718 - 770 = -52
-52 ÷ 770 = -0.06753246753246753
-0.06753246753246753 x 100 = -6.75%