429.41% is the change from 85 to 450
Calculation steps:
[( 450 - 85 ) ÷ 85] x 100 = 429.41%
Formula
Percentage change = [(450 - 85) / 85] x 100
Subtract the new number by the original number
450 - 85 = 365
365 ÷ 85 = 4.294117647058823
4.294117647058823 x 100 = 429.41%