First calculate the number of seeds from the sunflowers by multiplying the number of sunflowers by the number of seeds per sunflower: 6 sunflowers * 9 seeds/sunflower = <<6*9=54>>54 seeds
Next calculate the number of seeds from the dandelions by multiplying the number of dandelions by the number of seeds per dandelion: 8 dandelions * 12 seeds/dandelion = <<8*12=96>>96 seeds
Now add the number of seeds from each group of plants to find the total number of seeds: 54 seeds + 96 seeds = <<54+96=150>>150 seeds
Now divide the number of dandelion seeds by the total number of seeds and multiply the answer by 100 to find the percentage of seeds that come from the dandelions: 96 seeds / 150 seeds * 100% = 64%
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