-0.24% is the change from 825 to 823
Calculation steps:
[( 823 - 825 ) ÷ 825] x 100 = -0.24%
Formula
Percentage change = [(823 - 825) / 825] x 100
Subtract the new number by the original number
823 - 825 = -2
-2 ÷ 825 = -0.0024242424242424242
-0.0024242424242424242 x 100 = -0.24%