161.49% is the change from 309 to 808
Calculation steps:
[( 808 - 309 ) ÷ 309] x 100 = 161.49%
Formula
Percentage change = [(808 - 309) / 309] x 100
Subtract the new number by the original number
808 - 309 = 499
499 ÷ 309 = 1.6148867313915858
1.6148867313915858 x 100 = 161.49%