Canadian manufacturer Research in Motion (RIM) Ltd suffered a decline of around 23 per cent in the market value of its stock as investors fled the stock over fears about a new service-fee.

On Thursday, RIM announced its plan for a tiered "menu" of fees that the company would charge network providers for its new BlackBerry 10 devices from next year.

Investors are worried that RIM's new fees plan, which aims to refurbish its services revenue model, will put pressure on its high-margin services business.

The company charges carriers and big corporations for using its proprietary network to route encrypted messages across the world. Services business accounts for nearly 33 per cent of the BlackBerry-maker's revenue.

The company's new plan for a tiered "menu" of fees even eclipsed better -than-expected earnings for the third-quarter of current financial year.

On NASDAQ, RIM stock slipped to $12.36 a share in early trade on Friday, from a close of $14.12 a share on the previous day.

National Bank Financial analyst Kris Thompson downgraded RIM stock from "sector-perform" to "under-perform," and also slashed price target to from $15 to $10 a share.