20.8% is the change from 351 to 424
Calculation steps:
[( 424 - 351 ) ÷ 351] x 100 = 20.8%
Formula
Percentage change = [(424 - 351) / 351] x 100
Subtract the new number by the original number
424 - 351 = 73
73 ÷ 351 = 0.20797720797720798
0.20797720797720798 x 100 = 20.8%