21.29% is the change from 667 to 809
Calculation steps:
[( 809 - 667 ) ÷ 667] x 100 = 21.29%
Formula
Percentage change = [(809 - 667) / 667] x 100
Subtract the new number by the original number
809 - 667 = 142
142 ÷ 667 = 0.2128935532233883
0.2128935532233883 x 100 = 21.29%