-8.06% is the change from 831 to 764
Calculation steps:
[( 764 - 831 ) ÷ 831] x 100 = -8.06%
Formula
Percentage change = [(764 - 831) / 831] x 100
Subtract the new number by the original number
764 - 831 = -67
-67 ÷ 831 = -0.08062575210589651
-0.08062575210589651 x 100 = -8.06%