2512.9% is the change from 31 to 810
Calculation steps:
[( 810 - 31 ) ÷ 31] x 100 = 2512.9%
Formula
Percentage change = [(810 - 31) / 31] x 100
Subtract the new number by the original number
810 - 31 = 779
779 ÷ 31 = 25.129032258064516
25.129032258064516 x 100 = 2512.9%