40500% is the change from 2 to 812
Calculation steps:
[( 812 - 2 ) ÷ 2] x 100 = 40500%
Formula
Percentage change = [(812 - 2) / 2] x 100
Subtract the new number by the original number
812 - 2 = 810
810 ÷ 2 = 405
405 x 100 = 40500%
Example