-6.35% is the change from 851 to 797
Calculation steps:
[( 797 - 851 ) ÷ 851] x 100 = -6.35%
Formula
Percentage change = [(797 - 851) / 851] x 100
Subtract the new number by the original number
797 - 851 = -54
-54 ÷ 851 = -0.06345475910693302
-0.06345475910693302 x 100 = -6.35%