-0.37% is the change from 812 to 809
Calculation steps:
[( 809 - 812 ) ÷ 812] x 100 = -0.37%
Formula
Percentage change = [(809 - 812) / 812] x 100
Subtract the new number by the original number
809 - 812 = -3
-3 ÷ 812 = -0.003694581280788177
-0.003694581280788177 x 100 = -0.37%