380% is the change from 30 to 144
Calculation steps:
[( 144 - 30 ) ÷ 30] x 100 = 380%
Formula
Percentage change = [(144 - 30) / 30] x 100
Subtract the new number by the original number
144 - 30 = 114
114 ÷ 30 = 3.8
3.8 x 100 = 380%
Example