85.33% is the change from 450 to 834
Calculation steps:
[( 834 - 450 ) ÷ 450] x 100 = 85.33%
Formula
Percentage change = [(834 - 450) / 450] x 100
Subtract the new number by the original number
834 - 450 = 384
384 ÷ 450 = 0.8533333333333334
0.8533333333333334 x 100 = 85.33%