160.97% is the change from 310 to 809
Calculation steps:
[( 809 - 310 ) ÷ 310] x 100 = 160.97%
Formula
Percentage change = [(809 - 310) / 310] x 100
Subtract the new number by the original number
809 - 310 = 499
499 ÷ 310 = 1.6096774193548387
1.6096774193548387 x 100 = 160.97%