-12.76% is the change from 768 to 670
Calculation steps:
[( 670 - 768 ) ÷ 768] x 100 = -12.76%
Formula
Percentage change = [(670 - 768) / 768] x 100
Subtract the new number by the original number
670 - 768 = -98
-98 ÷ 768 = -0.12760416666666666
-0.12760416666666666 x 100 = -12.76%