-19.74% is the change from 851 to 683
Calculation steps:
[( 683 - 851 ) ÷ 851] x 100 = -19.74%
Formula
Percentage change = [(683 - 851) / 851] x 100
Subtract the new number by the original number
683 - 851 = -168
-168 ÷ 851 = -0.19741480611045828
-0.19741480611045828 x 100 = -19.74%