317.07% is the change from 123 to 513
Calculation steps:
[( 513 - 123 ) ÷ 123] x 100 = 317.07%
Formula
Percentage change = [(513 - 123) / 123] x 100
Subtract the new number by the original number
513 - 123 = 390
390 ÷ 123 = 3.1707317073170733
3.1707317073170733 x 100 = 317.07%