-7.99% is the change from 851 to 783
Calculation steps:
[( 783 - 851 ) ÷ 851] x 100 = -7.99%
Formula
Percentage change = [(783 - 851) / 851] x 100
Subtract the new number by the original number
783 - 851 = -68
-68 ÷ 851 = -0.0799059929494712
-0.0799059929494712 x 100 = -7.99%