19.9% is the change from 809 to 970
Calculation steps:
[( 970 - 809 ) ÷ 809] x 100 = 19.9%
Formula
Percentage change = [(970 - 809) / 809] x 100
Subtract the new number by the original number
970 - 809 = 161
161 ÷ 809 = 0.19901112484548825
0.19901112484548825 x 100 = 19.9%