-13.08% is the change from 780 to 678
Calculation steps:
[( 678 - 780 ) ÷ 780] x 100 = -13.08%
Formula
Percentage change = [(678 - 780) / 780] x 100
Subtract the new number by the original number
678 - 780 = -102
-102 ÷ 780 = -0.13076923076923078
-0.13076923076923078 x 100 = -13.08%