To solve these types of problems, we need to convert the two values into the same form.
We know that 1 = 1.00, as adding zeroes to the end of a decimal doesn't change the value.
To change a decimal into a percentage, we multiply the decimal by 100 and add a percent sign.
1.00 * 100 = 100%
Therefore, 1 = 100%
Because 120% is greater than 100%, thus,
120% > 1