84.5% is the change from 400 to 738
Calculation steps:
[( 738 - 400 ) ÷ 400] x 100 = 84.5%
Formula
Percentage change = [(738 - 400) / 400] x 100
Subtract the new number by the original number
738 - 400 = 338
338 ÷ 400 = 0.845
0.845 x 100 = 84.5%
Example