64.43% is the change from 492 to 809
Calculation steps:
[( 809 - 492 ) ÷ 492] x 100 = 64.43%
Formula
Percentage change = [(809 - 492) / 492] x 100
Subtract the new number by the original number
809 - 492 = 317
317 ÷ 492 = 0.6443089430894309
0.6443089430894309 x 100 = 64.43%