12.59% is the change from 397 to 447
Calculation steps:
[( 447 - 397 ) ÷ 397] x 100 = 12.59%
Formula
Percentage change = [(447 - 397) / 397] x 100
Subtract the new number by the original number
447 - 397 = 50
50 ÷ 397 = 0.12594458438287154
0.12594458438287154 x 100 = 12.59%