1.13% is the change from 800 to 809
Calculation steps:
[( 809 - 800 ) ÷ 800] x 100 = 1.13%
Formula
Percentage change = [(809 - 800) / 800] x 100
Subtract the new number by the original number
809 - 800 = 9
9 ÷ 800 = 0.01125
0.01125 x 100 = 1.13%
Example