3.19% is the change from 407 to 420
Calculation steps:
[( 420 - 407 ) ÷ 407] x 100 = 3.19%
Formula
Percentage change = [(420 - 407) / 407] x 100
Subtract the new number by the original number
420 - 407 = 13
13 ÷ 407 = 0.03194103194103194
0.03194103194103194 x 100 = 3.19%