I promised myself I wouldn't get too involved in this, but, in response to icastle, no I wouldn't use 110% to indicate an increase any more than I would score something as 11 out of 10! & tauzero, if a cake had increased in price by four times it's original price...then it's an increase of four times, not 400%. However, my waistline has increased by eating too much cake!
Oh, and to keep on topic....fill out this form? I usually fill IN forms. And the constant addition of 'for' in front of 'free', whats wrong with just 'free' or 'for nothing' ?