162.46% is the change from 309 to 811
Calculation steps:
[( 811 - 309 ) ÷ 309] x 100 = 162.46%
Formula
Percentage change = [(811 - 309) / 309] x 100
Subtract the new number by the original number
811 - 309 = 502
502 ÷ 309 = 1.6245954692556634
1.6245954692556634 x 100 = 162.46%