6.58% is the change from 395 to 421
Calculation steps:
[( 421 - 395 ) ÷ 395] x 100 = 6.58%
Formula
Percentage change = [(421 - 395) / 395] x 100
Subtract the new number by the original number
421 - 395 = 26
26 ÷ 395 = 0.06582278481012659
0.06582278481012659 x 100 = 6.58%