A number first increase by 30%, and then decreased by 20%.Find the net change in the number?

1. 
   

   A number first increase by 30%, and then decreased by 20%.Find the net change in the number?

   Answer 

   Let the number be 100 

   First increased by 30% so the number is = 130

   Again decreased by 20% now the number is = 130 - 0..2*130 =130 -26  = 104

   Net change  = 4%

   Second method

   Let the number be 'x'

   First increased by 30% so the number is = x +0.3x = 1.3x

   Again decreased by 20% now the number is = 1.3x-0.2(1.3x )=1.3x - 0.26x =  1.04x

   Net change in x = (1.04x -x)/x *100 = 4%