58.45% is the change from 284 to 450
Calculation steps:
[( 450 - 284 ) ÷ 284] x 100 = 58.45%
Formula
Percentage change = [(450 - 284) / 284] x 100
Subtract the new number by the original number
450 - 284 = 166
166 ÷ 284 = 0.5845070422535211
0.5845070422535211 x 100 = 58.45%