-2.3% is the change from 825 to 806
Calculation steps:
[( 806 - 825 ) ÷ 825] x 100 = -2.3%
Formula
Percentage change = [(806 - 825) / 825] x 100
Subtract the new number by the original number
806 - 825 = -19
-19 ÷ 825 = -0.02303030303030303
-0.02303030303030303 x 100 = -2.3%