2977.78% is the change from 27 to 831
Calculation steps:
[( 831 - 27 ) ÷ 27] x 100 = 2977.78%
Formula
Percentage change = [(831 - 27) / 27] x 100
Subtract the new number by the original number
831 - 27 = 804
804 ÷ 27 = 29.77777777777778
29.77777777777778 x 100 = 2977.78%