78.19% is the change from 454 to 809
Calculation steps:
[( 809 - 454 ) ÷ 454] x 100 = 78.19%
Formula
Percentage change = [(809 - 454) / 454] x 100
Subtract the new number by the original number
809 - 454 = 355
355 ÷ 454 = 0.7819383259911894
0.7819383259911894 x 100 = 78.19%