# Price changes shown in Instrument details

**URL:** <https://community.trading212.com/t/price-changes-shown-in-instrument-details/1929>\
**Category:** 🤝 Help\
**Created:** [February 26, 2020, 2:57pm UTC](https://community.trading212.com/t/price-changes-shown-in-instrument-details/1929 "2020-02-26T14:57:25Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![David](https://dub1.discourse-cdn.com/flex013/user_avatar/community.trading212.com/david/32/39_2.png) [@David](https://community.trading212.com/u/David)\
**Post date:** [December 9, 2020, 9:32am UTC](https://community.trading212.com/t/price-changes-shown-in-instrument-details/1929/9 "2020-12-09T09:32:54Z")

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@MikeC Hi. This is not an issue or inaccuracy. Publicly available sources like Google, Yahoo, or TradingView use the last trade price when calculating daily % change.

Our Invest & ISA service’s default chart price is the BUY price. We calculate our % change using the said BUY price which is different than the last trade price, that’s where the discrepancy comes from when comparing with other sources.

> [@Why are prices on the app different to google?](https://community.trading212.com/t/why-are-prices-on-the-app-different-to-google/3600/7):
>
> @abe Publicly available sources like Google are not 100% accurate, they can’t afford to provide real-time exchange data to everyone for free. Their data represents last trade price, not bid/ask & it’s also delayed. Our Invest charts show only BUY (ASK) prices. Please, take the time to check the disclaimers before making accusations regarding which data’s more accurate: [https://www.google.com/googlefinance/disclaimer/](https://www.google.com/googlefinance/disclaimer/)

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