-0.47% is the change from 851 to 847
Calculation steps:
[( 847 - 851 ) ÷ 851] x 100 = -0.47%
Formula
Percentage change = [(847 - 851) / 851] x 100
Subtract the new number by the original number
847 - 851 = -4
-4 ÷ 851 = -0.004700352526439483
-0.004700352526439483 x 100 = -0.47%