20.29% is the change from 823 to 990
Calculation steps:
[( 990 - 823 ) ÷ 823] x 100 = 20.29%
Formula
Percentage change = [(990 - 823) / 823] x 100
Subtract the new number by the original number
990 - 823 = 167
167 ÷ 823 = 0.20291616038882138
0.20291616038882138 x 100 = 20.29%