350% is the change from 4 to 18
Calculation steps:
[( 18 - 4 ) ÷ 4] x 100 = 350%
Formula
Percentage change = [(18 - 4) / 4] x 100
Subtract the new number by the original number
18 - 4 = 14
14 ÷ 4 = 3.5
3.5 x 100 = 350%
Example