57.39% is the change from 284 to 447
Calculation steps:
[( 447 - 284 ) ÷ 284] x 100 = 57.39%
Formula
Percentage change = [(447 - 284) / 284] x 100
Subtract the new number by the original number
447 - 284 = 163
163 ÷ 284 = 0.573943661971831
0.573943661971831 x 100 = 57.39%