108.51% is the change from 388 to 809
Calculation steps:
[( 809 - 388 ) ÷ 388] x 100 = 108.51%
Formula
Percentage change = [(809 - 388) / 388] x 100
Subtract the new number by the original number
809 - 388 = 421
421 ÷ 388 = 1.0850515463917525
1.0850515463917525 x 100 = 108.51%