313.33% is the change from 30 to 124
Calculation steps:
[( 124 - 30 ) ÷ 30] x 100 = 313.33%
Formula
Percentage change = [(124 - 30) / 30] x 100
Subtract the new number by the original number
124 - 30 = 94
94 ÷ 30 = 3.1333333333333333
3.1333333333333333 x 100 = 313.33%