-2.91% is the change from 791 to 768
Calculation steps:
[( 768 - 791 ) ÷ 791] x 100 = -2.91%
Formula
Percentage change = [(768 - 791) / 791] x 100
Subtract the new number by the original number
768 - 791 = -23
-23 ÷ 791 = -0.029077117572692796
-0.029077117572692796 x 100 = -2.91%