80400% is the change from 1 to 805
Calculation steps:
[( 805 - 1 ) ÷ 1] x 100 = 80400%
Formula
Percentage change = [(805 - 1) / 1] x 100
Subtract the new number by the original number
805 - 1 = 804
804 ÷ 1 = 804
804 x 100 = 80400%
Example