-19.27% is the change from 851 to 687
Calculation steps:
[( 687 - 851 ) ÷ 851] x 100 = -19.27%
Formula
Percentage change = [(687 - 851) / 851] x 100
Subtract the new number by the original number
687 - 851 = -164
-164 ÷ 851 = -0.1927144535840188
-0.1927144535840188 x 100 = -19.27%