19.58% is the change from 812 to 971
Calculation steps:
[( 971 - 812 ) ÷ 812] x 100 = 19.58%
Formula
Percentage change = [(971 - 812) / 812] x 100
Subtract the new number by the original number
971 - 812 = 159
159 ÷ 812 = 0.1958128078817734
0.1958128078817734 x 100 = 19.58%