19.73% is the change from 811 to 971
Calculation steps:
[( 971 - 811 ) ÷ 811] x 100 = 19.73%
Formula
Percentage change = [(971 - 811) / 811] x 100
Subtract the new number by the original number
971 - 811 = 160
160 ÷ 811 = 0.19728729963008632
0.19728729963008632 x 100 = 19.73%