-14.1% is the change from 780 to 670
Calculation steps:
[( 670 - 780 ) ÷ 780] x 100 = -14.1%
Formula
Percentage change = [(670 - 780) / 780] x 100
Subtract the new number by the original number
670 - 780 = -110
-110 ÷ 780 = -0.14102564102564102
-0.14102564102564102 x 100 = -14.1%