40750% is the change from 2 to 817
Calculation steps:
[( 817 - 2 ) ÷ 2] x 100 = 40750%
Formula
Percentage change = [(817 - 2) / 2] x 100
Subtract the new number by the original number
817 - 2 = 815
815 ÷ 2 = 407.5
407.5 x 100 = 40750%
Example