-2.33% is the change from 816 to 797
Calculation steps:
[( 797 - 816 ) ÷ 816] x 100 = -2.33%
Formula
Percentage change = [(797 - 816) / 816] x 100
Subtract the new number by the original number
797 - 816 = -19
-19 ÷ 816 = -0.023284313725490197
-0.023284313725490197 x 100 = -2.33%