CHART: This year's Chinese stock market gains have just been wiped

China’s stock market has had a session to forget on Monday.

At the close the benchmark Shanghai Composite index lost 8.492%, its largest one-day percentage decline since February 27, 2009.

The decline, the latest in a long line of steep market falls, has now seen the index move into negative territory for calendar year 2015.

It’s now down 0.91% having been up close to 60% on June 12.

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