110.75% is the change from 400 to 843
Calculation steps:
[( 843 - 400 ) ÷ 400] x 100 = 110.75%
Formula
Percentage change = [(843 - 400) / 400] x 100
Subtract the new number by the original number
843 - 400 = 443
443 ÷ 400 = 1.1075
1.1075 x 100 = 110.75%