-0.24% is the change from 827 to 825
Calculation steps:
[( 825 - 827 ) ÷ 827] x 100 = -0.24%
Formula
Percentage change = [(825 - 827) / 827] x 100
Subtract the new number by the original number
825 - 827 = -2
-2 ÷ 827 = -0.0024183796856106408
-0.0024183796856106408 x 100 = -0.24%