-12.63% is the change from 768 to 671
Calculation steps:
[( 671 - 768 ) ÷ 768] x 100 = -12.63%
Formula
Percentage change = [(671 - 768) / 768] x 100
Subtract the new number by the original number
671 - 768 = -97
-97 ÷ 768 = -0.12630208333333334
-0.12630208333333334 x 100 = -12.63%