21.03% is the change from 813 to 984
Calculation steps:
[( 984 - 813 ) ÷ 813] x 100 = 21.03%
Formula
Percentage change = [(984 - 813) / 813] x 100
Subtract the new number by the original number
984 - 813 = 171
171 ÷ 813 = 0.21033210332103322
0.21033210332103322 x 100 = 21.03%