313.01% is the change from 123 to 508
Calculation steps:
[( 508 - 123 ) ÷ 123] x 100 = 313.01%
Formula
Percentage change = [(508 - 123) / 123] x 100
Subtract the new number by the original number
508 - 123 = 385
385 ÷ 123 = 3.130081300813008
3.130081300813008 x 100 = 313.01%