3800% is the change from 13 to 507
Calculation steps:
[( 507 - 13 ) ÷ 13] x 100 = 3800%
Formula
Percentage change = [(507 - 13) / 13] x 100
Subtract the new number by the original number
507 - 13 = 494
494 ÷ 13 = 38
38 x 100 = 3800%
Example