Complex sentence: The number of participants at various Komen fundraising events dropped 15-30% in 2012, compared to the previous year, though it is unclear whether this was because of the initial decision to defund Planned Parenthood or the reversal.
Split into simpler sentences: The number of participants at various Komen fundraising events dropped 15-30% in 2012, compared to the previous year. It is unclear whether this was because of the initial decision to defund Planned Parenthood or the reversal.