4% = 0.04 - move the percent sign 2 places to the left and change it to a decimal
220% = 2 1/5 - move the percent sign 2 places to the left and change it to a decimal, then change the .20 to a fraction
1/4 = 25% - 1/4 is .25, move decimal 2 places to the right, change to a percent sign
40% = 2/5 - move the percent sign 2 places to the left, change to decimal point, convert number to a fraction
250% = 2.5 - move percent sign 2 places to the left, change to decimal point
Hope this helps :)