200% is the change from 6 to 18
Calculation steps:
[( 18 - 6 ) ÷ 6] x 100 = 200%
Formula
Percentage change = [(18 - 6) / 6] x 100
Subtract the new number by the original number
18 - 6 = 12
12 ÷ 6 = 2
2 x 100 = 200%
Example