-1.41% is the change from 851 to 839
Calculation steps:
[( 839 - 851 ) ÷ 851] x 100 = -1.41%
Formula
Percentage change = [(839 - 851) / 851] x 100
Subtract the new number by the original number
839 - 851 = -12
-12 ÷ 851 = -0.01410105757931845
-0.01410105757931845 x 100 = -1.41%