2535.48% is the change from 31 to 817
Calculation steps:
[( 817 - 31 ) ÷ 31] x 100 = 2535.48%
Formula
Percentage change = [(817 - 31) / 31] x 100
Subtract the new number by the original number
817 - 31 = 786
786 ÷ 31 = 25.35483870967742
25.35483870967742 x 100 = 2535.48%