600% is the change from 57 to 399
Calculation steps:
[( 399 - 57 ) ÷ 57] x 100 = 600%
Formula
Percentage change = [(399 - 57) / 57] x 100
Subtract the new number by the original number
399 - 57 = 342
342 ÷ 57 = 6
6 x 100 = 600%
Example