-15.28% is the change from 851 to 721
Calculation steps:
[( 721 - 851 ) ÷ 851] x 100 = -15.28%
Formula
Percentage change = [(721 - 851) / 851] x 100
Subtract the new number by the original number
721 - 851 = -130
-130 ÷ 851 = -0.15276145710928318
-0.15276145710928318 x 100 = -15.28%