91.25% is the change from 423 to 809
Calculation steps:
[( 809 - 423 ) ÷ 423] x 100 = 91.25%
Formula
Percentage change = [(809 - 423) / 423] x 100
Subtract the new number by the original number
809 - 423 = 386
386 ÷ 423 = 0.9125295508274232
0.9125295508274232 x 100 = 91.25%