337.4% is the change from 123 to 538
Calculation steps:
[( 538 - 123 ) ÷ 123] x 100 = 337.4%
Formula
Percentage change = [(538 - 123) / 123] x 100
Subtract the new number by the original number
538 - 123 = 415
415 ÷ 123 = 3.3739837398373984
3.3739837398373984 x 100 = 337.4%