-21.03% is the change from 851 to 672
Calculation steps:
[( 672 - 851 ) ÷ 851] x 100 = -21.03%
Formula
Percentage change = [(672 - 851) / 851] x 100
Subtract the new number by the original number
672 - 851 = -179
-179 ÷ 851 = -0.21034077555816685
-0.21034077555816685 x 100 = -21.03%