20.02% is the change from 809 to 971
Calculation steps:
[( 971 - 809 ) ÷ 809] x 100 = 20.02%
Formula
Percentage change = [(971 - 809) / 809] x 100
Subtract the new number by the original number
971 - 809 = 162
162 ÷ 809 = 0.20024721878862795
0.20024721878862795 x 100 = 20.02%