-8.46% is the change from 851 to 779
Calculation steps:
[( 779 - 851 ) ÷ 851] x 100 = -8.46%
Formula
Percentage change = [(779 - 851) / 851] x 100
Subtract the new number by the original number
779 - 851 = -72
-72 ÷ 851 = -0.0846063454759107
-0.0846063454759107 x 100 = -8.46%