99.75% is the change from 406 to 811
Calculation steps:
[( 811 - 406 ) ÷ 406] x 100 = 99.75%
Formula
Percentage change = [(811 - 406) / 406] x 100
Subtract the new number by the original number
811 - 406 = 405
405 ÷ 406 = 0.9975369458128078
0.9975369458128078 x 100 = 99.75%