75.44% is the change from 456 to 800
Calculation steps:
[( 800 - 456 ) ÷ 456] x 100 = 75.44%
Formula
Percentage change = [(800 - 456) / 456] x 100
Subtract the new number by the original number
800 - 456 = 344
344 ÷ 456 = 0.7543859649122807
0.7543859649122807 x 100 = 75.44%