百分數表示百分數(百)，即百分數與100之比。百分數的符號為％。我們通常會計算獲得的商標，投資回報率等百分比。該百分比也可以超過100％。

例如，假設我們有總數和一部分。所以我們說那一部分占總數的百分之幾，應計算為-percentage?=?(?part?/?total?)?×?100

算法1.?Collect?values?for?part?and?total

2.?Apply?formula?{?percentage?=?(?part?/?total?)?×?100?}

3.?Display?percentage

示例import?java.util.Scanner;

public?class?Percentage?{

public?static?void?main(String?args[]){

float?percentage;

float?total_marks;

float?scored;

Scanner?sc?=?new?Scanner(System.in);

System.out.println("Enter?your?marks?::");

scored?=?sc.nextFloat();

System.out.println("Enter?total?marks?::");

total_marks?=?sc.nextFloat();

percentage?=?(float)((scored?/?total_marks)?*?100);

System.out.println("Percentage?::"+?percentage);

}

}

輸出結果Enter?your?marks?::

500

Enter?total?marks?::

600

Percentage?::83.33333