120.88% is the change from 388 to 857
Calculation steps:
[( 857 - 388 ) ÷ 388] x 100 = 120.88%
Formula
Percentage change = [(857 - 388) / 388] x 100
Subtract the new number by the original number
857 - 388 = 469
469 ÷ 388 = 1.208762886597938
1.208762886597938 x 100 = 120.88%