7.5% is the change from 773 to 831
Calculation steps:
[( 831 - 773 ) ÷ 773] x 100 = 7.5%
Formula
Percentage change = [(831 - 773) / 773] x 100
Subtract the new number by the original number
831 - 773 = 58
58 ÷ 773 = 0.07503234152652005
0.07503234152652005 x 100 = 7.5%