-7.82% is the change from 831 to 766
Calculation steps:
[( 766 - 831 ) ÷ 831] x 100 = -7.82%
Formula
Percentage change = [(766 - 831) / 831] x 100
Subtract the new number by the original number
766 - 831 = -65
-65 ÷ 831 = -0.07821901323706378
-0.07821901323706378 x 100 = -7.82%