I need to increase our prices on all of our products, how do I apply a % price increase to all of my saved components/products?

Hello Gillian-murphyen, thanks for posting on the Community page, To change the sales price/rate of a product item, follow these steps to proceed: 

1. Go to Sales and select Products & services. 

2. Find the product or service you want to change. 

3. Tap Edit in the Action column. Change the Sales price/rate. 

4. Once done, click Save and close. 

For more details about this process, refer to this article: Add product and service items to QuickBooks Online.