-16.79% is the change from 923 to 768
Calculation steps:
[( 768 - 923 ) ÷ 923] x 100 = -16.79%
Formula
Percentage change = [(768 - 923) / 923] x 100
Subtract the new number by the original number
768 - 923 = -155
-155 ÷ 923 = -0.16793066088840736
-0.16793066088840736 x 100 = -16.79%