百分比計算

使用方法

1. Use the first card to answer 'X is what percent of Y?' by filling in X and Y。
2. Use the second card to calculate N% of X by entering the percentage and the base value。
3. Use the third card to increase or decrease X by N% and see both results side by side。
4. Use the fourth card to find the percentage change from A to B。

範例

• In card 1, entering X=45 and Y=180 shows 25% — 45 is 25% of 180。
• In card 4, entering A=80 and B=100 shows a 25% increase from 80 to 100。