-3.76% is the change from 851 to 819
Calculation steps:
[( 819 - 851 ) ÷ 851] x 100 = -3.76%
Formula
Percentage change = [(819 - 851) / 851] x 100
Subtract the new number by the original number
819 - 851 = -32
-32 ÷ 851 = -0.03760282021151586
-0.03760282021151586 x 100 = -3.76%