-0.9% is the change from 775 to 768
Calculation steps:
[( 768 - 775 ) ÷ 775] x 100 = -0.9%
Formula
Percentage change = [(768 - 775) / 775] x 100
Subtract the new number by the original number
768 - 775 = -7
-7 ÷ 775 = -0.00903225806451613
-0.00903225806451613 x 100 = -0.9%