8.81% is the change from 386 to 420
Calculation steps:
[( 420 - 386 ) ÷ 386] x 100 = 8.81%
Formula
Percentage change = [(420 - 386) / 386] x 100
Subtract the new number by the original number
420 - 386 = 34
34 ÷ 386 = 0.08808290155440414
0.08808290155440414 x 100 = 8.81%