100.5% is the change from 404 to 810
Calculation steps:
[( 810 - 404 ) ÷ 404] x 100 = 100.5%
Formula
Percentage change = [(810 - 404) / 404] x 100
Subtract the new number by the original number
810 - 404 = 406
406 ÷ 404 = 1.004950495049505
1.004950495049505 x 100 = 100.5%