105.5% is the change from 400 to 822
Calculation steps:
[( 822 - 400 ) ÷ 400] x 100 = 105.5%
Formula
Percentage change = [(822 - 400) / 400] x 100
Subtract the new number by the original number
822 - 400 = 422
422 ÷ 400 = 1.055
1.055 x 100 = 105.5%
Example