Question: how to calculate percentage in aptitude test?
Answer: Percent implies “for every hundred”. ...  To calculate p % of y. ...  To find what percentage of x is y: y/x × 100. To calculate percentage change in value. ...  Percentage point change = Difference of two percentage figures. Increase N by S % = N( 1+ S/100 ) Decrease N by S % = N (1 – S/100)