39.87% is the change from 301 to 421
Calculation steps:
[( 421 - 301 ) ÷ 301] x 100 = 39.87%
Formula
Percentage change = [(421 - 301) / 301] x 100
Subtract the new number by the original number
421 - 301 = 120
120 ÷ 301 = 0.39867109634551495
0.39867109634551495 x 100 = 39.87%