162.3% is the change from 305 to 800
Calculation steps:
[( 800 - 305 ) ÷ 305] x 100 = 162.3%
Formula
Percentage change = [(800 - 305) / 305] x 100
Subtract the new number by the original number
800 - 305 = 495
495 ÷ 305 = 1.6229508196721312
1.6229508196721312 x 100 = 162.3%