The point and figure chart is a good way to see the price movements over the past 20 years.
Yesterday's 2.27% increase in the index is mainly the result of wheat prices increasing by the daily limit of 70 cents per bushel.
Here is another website I find useful regarding commodity futures prices. It is the ‘Extreme Futures Moves’.
https://quotes.ino.com/analysis/extremes/futures#winners
CRB = Commodity Research Bureau