122% is the change from 400 to 888
Calculation steps:
[( 888 - 400 ) ÷ 400] x 100 = 122%
Formula
Percentage change = [(888 - 400) / 400] x 100
Subtract the new number by the original number
888 - 400 = 488
488 ÷ 400 = 1.22
1.22 x 100 = 122%
Example