21.14% is the change from 823 to 997
Calculation steps:
[( 997 - 823 ) ÷ 823] x 100 = 21.14%
Formula
Percentage change = [(997 - 823) / 823] x 100
Subtract the new number by the original number
997 - 823 = 174
174 ÷ 823 = 0.21142162818955043
0.21142162818955043 x 100 = 21.14%