1036.25% is the change from 80 to 909
Calculation steps:
[( 909 - 80 ) ÷ 80] x 100 = 1036.25%
Formula
Percentage change = [(909 - 80) / 80] x 100
Subtract the new number by the original number
909 - 80 = 829
829 ÷ 80 = 10.3625
10.3625 x 100 = 1036.25%