-1.66% is the change from 781 to 768
Calculation steps:
[( 768 - 781 ) ÷ 781] x 100 = -1.66%
Formula
Percentage change = [(768 - 781) / 781] x 100
Subtract the new number by the original number
768 - 781 = -13
-13 ÷ 781 = -0.016645326504481434
-0.016645326504481434 x 100 = -1.66%