I asked ? what is 10,000% of a penney /how to figure? Answer was 10,000%=100 Why 10,000% to 100?

Question

I asked the question: what is 10,000% of a penney and how to figure it? I got answer of 10,000%=100       100/ .01 = $1     

New question is how do u know to change the 10,000% to 100?

Answer 1

"%" means /100, so 10,000% means 10,000/100 or just 100.