111.25% is the change from 400 to 845
Calculation steps:
[( 845 - 400 ) ÷ 400] x 100 = 111.25%
Formula
Percentage change = [(845 - 400) / 400] x 100
Subtract the new number by the original number
845 - 400 = 445
445 ÷ 400 = 1.1125
1.1125 x 100 = 111.25%