-7.69% is the change from 780 to 720
Calculation steps:
[( 720 - 780 ) ÷ 780] x 100 = -7.69%
Formula
Percentage change = [(720 - 780) / 780] x 100
Subtract the new number by the original number
720 - 780 = -60
-60 ÷ 780 = -0.07692307692307693
-0.07692307692307693 x 100 = -7.69%