Why is the Coles share price crashing 8% on Friday?

The Coles Group Ltd (ASX: COL) share price is taking a beating today.

Shares in the S&P/ASX 200 Index (ASX: XJO) supermarket giant closed yesterday trading for $22.19. In morning trade on Friday, shares are changing hands for $20.50, down 7.6%.

For some context, the ASX 200 is just…