how to find Percentage let see example if we find percentage of 90 out of 150 then 

• Divide the first number by the second (e.g. 90 ÷ 150 = 0.60)
• Multiply the answer by 100 (Move decimal point two places to the right) (e.g. o.60*100 = 60)
• Round to the desired precision ( if )
• Follow the answer with the % sign (e.g. 90 is 60% of 150)

Similary to find fraction percetage is easy like if we find ther percentage of 2/3 then first divide 2 by 3 ,2nd then answer will be 0.66667 ,then multiply the answer by 100 and we get 66.6667,3rd Round to the desired precision 67 from 66.6667 , in last 4rth wright the answer with the % sign 67%