19.63% is the change from 820 to 981
Calculation steps:
[( 981 - 820 ) ÷ 820] x 100 = 19.63%
Formula
Percentage change = [(981 - 820) / 820] x 100
Subtract the new number by the original number
981 - 820 = 161
161 ÷ 820 = 0.19634146341463415
0.19634146341463415 x 100 = 19.63%