165.25% is the change from 305 to 809
Calculation steps:
[( 809 - 305 ) ÷ 305] x 100 = 165.25%
Formula
Percentage change = [(809 - 305) / 305] x 100
Subtract the new number by the original number
809 - 305 = 504
504 ÷ 305 = 1.6524590163934427
1.6524590163934427 x 100 = 165.25%