9.09% is the change from 385 to 420
Calculation steps:
[( 420 - 385 ) ÷ 385] x 100 = 9.09%
Formula
Percentage change = [(420 - 385) / 385] x 100
Subtract the new number by the original number
420 - 385 = 35
35 ÷ 385 = 0.09090909090909091
0.09090909090909091 x 100 = 9.09%