Whenever the Secretary of State makes an order under section 148 of the Great Britain Administration Act directing that earnings factors for any tax year be increased by any percentage (in order to restore their value in relation to the general level of earnings so far as they are relevant to the calculation of the additional pension in the rate of any long-term benefit, the calculation of any guaranteed minimum pension or any other calculation required under Part III of the F1Pension Schemes Act 1993), the Department may make an order for Northern Ireland directing that corresponding earnings factors for the same year be increased by a corresponding percentage.