21.32% is the change from 816 to 990
Calculation steps:
[( 990 - 816 ) ÷ 816] x 100 = 21.32%
Formula
Percentage change = [(990 - 816) / 816] x 100
Subtract the new number by the original number
990 - 816 = 174
174 ÷ 816 = 0.21323529411764705
0.21323529411764705 x 100 = 21.32%