-4.58% is the change from 851 to 812
Calculation steps:
[( 812 - 851 ) ÷ 851] x 100 = -4.58%
Formula
Percentage change = [(812 - 851) / 851] x 100
Subtract the new number by the original number
812 - 851 = -39
-39 ÷ 851 = -0.045828437132784956
-0.045828437132784956 x 100 = -4.58%