21.69% is the change from 816 to 993
Calculation steps:
[( 993 - 816 ) ÷ 816] x 100 = 21.69%
Formula
Percentage change = [(993 - 816) / 816] x 100
Subtract the new number by the original number
993 - 816 = 177
177 ÷ 816 = 0.21691176470588236
0.21691176470588236 x 100 = 21.69%