-13.77% is the change from 777 to 670
Calculation steps:
[( 670 - 777 ) ÷ 777] x 100 = -13.77%
Formula
Percentage change = [(670 - 777) / 777] x 100
Subtract the new number by the original number
670 - 777 = -107
-107 ÷ 777 = -0.1377091377091377
-0.1377091377091377 x 100 = -13.77%