Let the percent value that we are looking for be x
Next is to represent the situaton as a mathematical expression
To get what percent of 5 will give 4, we will write it as;
x% of 5 = 4
x/100 * 5 = 4
5x/100 = 4
Cross multiply
5x = 400
Divide both sides by 4;
5x/5 = 400/5
x = 80
Therefore we can conclude that 80% of 5 will give 4