16.33% is the change from 447 to 520
Calculation steps:
[( 520 - 447 ) ÷ 447] x 100 = 16.33%
Formula
Percentage change = [(520 - 447) / 447] x 100
Subtract the new number by the original number
520 - 447 = 73
73 ÷ 447 = 0.16331096196868009
0.16331096196868009 x 100 = 16.33%