20.34% is the change from 349 to 420
Calculation steps:
[( 420 - 349 ) ÷ 349] x 100 = 20.34%
Formula
Percentage change = [(420 - 349) / 349] x 100
Subtract the new number by the original number
420 - 349 = 71
71 ÷ 349 = 0.2034383954154728
0.2034383954154728 x 100 = 20.34%