22.39% is the change from 661 to 809
Calculation steps:
[( 809 - 661 ) ÷ 661] x 100 = 22.39%
Formula
Percentage change = [(809 - 661) / 661] x 100
Subtract the new number by the original number
809 - 661 = 148
148 ÷ 661 = 0.22390317700453857
0.22390317700453857 x 100 = 22.39%