-1.58% is the change from 825 to 812
Calculation steps:
[( 812 - 825 ) ÷ 825] x 100 = -1.58%
Formula
Percentage change = [(812 - 825) / 825] x 100
Subtract the new number by the original number
812 - 825 = -13
-13 ÷ 825 = -0.01575757575757576
-0.01575757575757576 x 100 = -1.58%