-10.55% is the change from 768 to 687
Calculation steps:
[( 687 - 768 ) ÷ 768] x 100 = -10.55%
Formula
Percentage change = [(687 - 768) / 768] x 100
Subtract the new number by the original number
687 - 768 = -81
-81 ÷ 768 = -0.10546875
-0.10546875 x 100 = -10.55%