81.82% is the change from 440 to 800
Calculation steps:
[( 800 - 440 ) ÷ 440] x 100 = 81.82%
Formula
Percentage change = [(800 - 440) / 440] x 100
Subtract the new number by the original number
800 - 440 = 360
360 ÷ 440 = 0.8181818181818182
0.8181818181818182 x 100 = 81.82%