-0.64% is the change from 780 to 775
Calculation steps:
[( 775 - 780 ) ÷ 780] x 100 = -0.64%
Formula
Percentage change = [(775 - 780) / 780] x 100
Subtract the new number by the original number
775 - 780 = -5
-5 ÷ 780 = -0.00641025641025641
-0.00641025641025641 x 100 = -0.64%