The following is the Options Chain of CRM (Salesforce) for March 19, 2021.

1. What does the % Change in this chart?
2. What does the Volume mean?
3. At the $300 strike, I see 4899 Open Internet. Does that mean 4899 options have been sold by traders who are expecting the price to reach at $300?
4. Is there any indication from the chart that the IV will not go down significantly for CRM before March 19, 2021?
5. What is the right option strategy for any stock symbol to play against the IV but only against the price?
6. Take this scenario. A trader buy at strike at $115 at IV 71.95%. A month from now, IV drops to 25% but the price goes up to $240. Does that make a profit or a loss?
7. From the Chart what is considered as a low IV? Is 40$ low IV?