Multiple choice general knowledge math & puzzles

Which of these percentage increases is the greatest?

  1. From 13 to 81

  2. From 12 to 80

  3. From 1 to 69

  4. All of them are equal

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Percentage increase is (New-Old)/Old. From 13 to 81 is ~523%. From 12 to 80 is ~566%. From 1 to 69 is (68/1)*100 = 6800%. Thus, 1 to 69 is the greatest increase.