The US dollar has weakened dramatically since 2007, with the Nominal Major Currencies Dollar Index dropped to 71.1053 in early November, marking a year-to-date decline of 12.7% or a year-on-year decline of 10%.
=> I can't understand the bold part very clearly. Does it mean that in early November, the declining rate was 12.7%, and that is equal to 10% higher than last year's decline? I remember asking about 'year-on-year'. Someone told me the meaning of the whole sentence but he/she wasn't sure what 'year-on-year' really meant. Now I'd like to raise that question again, together with 'year-to-date'. If anyone here majors in Business English, please help me.
Thank you very much, Nessie.
Top answer
year-to-date -- January 1 until whenever of the same year (early November in this case) year-on-year -- early November last year to early November this year CJ
— CalifJim
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year-to-date -- January 1 until whenever of the same year (early November in this case) year-on-year -- early November last year to early November this year