373.33% is the change from 30 to 142
Calculation steps:
[( 142 - 30 ) ÷ 30] x 100 = 373.33%
Formula
Percentage change = [(142 - 30) / 30] x 100
Subtract the new number by the original number
142 - 30 = 112
112 ÷ 30 = 3.7333333333333334
3.7333333333333334 x 100 = 373.33%