19.78% is the change from 819 to 981
Calculation steps:
[( 981 - 819 ) ÷ 819] x 100 = 19.78%
Formula
Percentage change = [(981 - 819) / 819] x 100
Subtract the new number by the original number
981 - 819 = 162
162 ÷ 819 = 0.1978021978021978
0.1978021978021978 x 100 = 19.78%