77.41% is the change from 456 to 809
Calculation steps:
[( 809 - 456 ) ÷ 456] x 100 = 77.41%
Formula
Percentage change = [(809 - 456) / 456] x 100
Subtract the new number by the original number
809 - 456 = 353
353 ÷ 456 = 0.7741228070175439
0.7741228070175439 x 100 = 77.41%