370% is the change from 30 to 141
Calculation steps:
[( 141 - 30 ) ÷ 30] x 100 = 370%
Formula
Percentage change = [(141 - 30) / 30] x 100
Subtract the new number by the original number
141 - 30 = 111
111 ÷ 30 = 3.7
3.7 x 100 = 370%
Example