9% is the change from 200 to 218
Calculation steps:
[( 218 - 200 ) ÷ 200] x 100 = 9%
Formula
Percentage change = [(218 - 200) / 200] x 100
Subtract the new number by the original number
218 - 200 = 18
18 ÷ 200 = 0.09
0.09 x 100 = 9%
Example