Percent decrease, step by step
Taking a percent off a number is the half of percent that shows up in every sale, discount and drop.
The question
20% less than 115
1%of115=1.15
1.15×20=23
115−23=92
- Find one percent first — that is one hundredth of 115, which is 1.15.
- 20% is 20 of those, so multiply: 1.15 × 20 = 23.
- "Less than" means the 23 comes OFF the 115, and the 23 was never the answer: 115 − 23 = 92.
How it works.
- 01
Find one percent first — that is one hundredth of 115, which is 1.15.
- 02
20% is 20 of those, so multiply: 1.15 × 20 = 23.
- 03
"Less than" means the 23 comes OFF the 115, and the 23 was never the answer: 115 − 23 = 92.