-0.97% is the change from 824 to 816
Calculation steps:
[( 816 - 824 ) ÷ 824] x 100 = -0.97%
Formula
Percentage change = [(816 - 824) / 824] x 100
Subtract the new number by the original number
816 - 824 = -8
-8 ÷ 824 = -0.009708737864077669
-0.009708737864077669 x 100 = -0.97%