58.1% is the change from 284 to 449
Calculation steps:
[( 449 - 284 ) ÷ 284] x 100 = 58.1%
Formula
Percentage change = [(449 - 284) / 284] x 100
Subtract the new number by the original number
449 - 284 = 165
165 ÷ 284 = 0.5809859154929577
0.5809859154929577 x 100 = 58.1%