312.1% is the change from 124 to 511
Calculation steps:
[( 511 - 124 ) ÷ 124] x 100 = 312.1%
Formula
Percentage change = [(511 - 124) / 124] x 100
Subtract the new number by the original number
511 - 124 = 387
387 ÷ 124 = 3.120967741935484
3.120967741935484 x 100 = 312.1%