-0.39% is the change from 770 to 767
Calculation steps:
[( 767 - 770 ) ÷ 770] x 100 = -0.39%
Formula
Percentage change = [(767 - 770) / 770] x 100
Subtract the new number by the original number
767 - 770 = -3
-3 ÷ 770 = -0.003896103896103896
-0.003896103896103896 x 100 = -0.39%