What is 0.45 as a percentage?

Converting from a decimal to percentage simply requires moving the decimal point two places to the right.

• Original: 0.45
• One Place: 4.5 (we removed the insignificant zero)
• Two Places: 45.0 (we re-added the insignificant zero and moved it to the other end)

So 0.45 is the same as 45%.