23.49% is the change from 809 to 999
Calculation steps:
[( 999 - 809 ) ÷ 809] x 100 = 23.49%
Formula
Percentage change = [(999 - 809) / 809] x 100
Subtract the new number by the original number
999 - 809 = 190
190 ÷ 809 = 0.23485784919653893
0.23485784919653893 x 100 = 23.49%