386.92% is the change from 107 to 521
Calculation steps:
[( 521 - 107 ) ÷ 107] x 100 = 386.92%
Formula
Percentage change = [(521 - 107) / 107] x 100
Subtract the new number by the original number
521 - 107 = 414
414 ÷ 107 = 3.869158878504673
3.869158878504673 x 100 = 386.92%