925.93% is the change from 81 to 831
Calculation steps:
[( 831 - 81 ) ÷ 81] x 100 = 925.93%
Formula
Percentage change = [(831 - 81) / 81] x 100
Subtract the new number by the original number
831 - 81 = 750
750 ÷ 81 = 9.25925925925926
9.25925925925926 x 100 = 925.93%