-9.54% is the change from 849 to 768
Calculation steps:
[( 768 - 849 ) ÷ 849] x 100 = -9.54%
Formula
Percentage change = [(768 - 849) / 849] x 100
Subtract the new number by the original number
768 - 849 = -81
-81 ÷ 849 = -0.09540636042402827
-0.09540636042402827 x 100 = -9.54%