144.41% is the change from 331 to 809
Calculation steps:
[( 809 - 331 ) ÷ 331] x 100 = 144.41%
Formula
Percentage change = [(809 - 331) / 331] x 100
Subtract the new number by the original number
809 - 331 = 478
478 ÷ 331 = 1.444108761329305
1.444108761329305 x 100 = 144.41%