1. The change in GHG intensity or absolute GHG emissions shall be calculated as the percentage change between, on the one hand, the weighted average GHG intensity or absolute GHG emissions of all constituents of the EU Climate Transition Benchmark or the EU Paris-aligned Benchmark at the end of year 'n' and, on the other hand, the weighted average GHG intensity or absolute GHG emissions of all constituents of the benchmarks at the end of year n-1.

2. Benchmark administrators shall use a new base year whenever significant changes in the calculation methodology of GHG intensity or absolute GHG emissions occur.

For the purposes of the first subparagraph, a new base year shall mean the year against which the decarbonisation trajectory referred to in Article 7 is calculated.

The selection of a new base year shall be without prejudice to the rules laid down in Article 7(5).