Question

2 times of a number is 100% increase in the number if we take half number what would be decrease %

Answer 1

50% decreased

let us check - number is 4

2 x 4 = 8

so let us check %

8/4  x 100  = 200%

ie. 100% increased because from 100% it came to 200%.

Now take 1/2

4/2 = 2

so %

2/4  x 100  = 50%

ie. 50% decreased from 100% (100 - 50 = 50)

I hope you understood. Now you can do it yourself