91.33% is the change from 450 to 861
Calculation steps:
[( 861 - 450 ) ÷ 450] x 100 = 91.33%
Formula
Percentage change = [(861 - 450) / 450] x 100
Subtract the new number by the original number
861 - 450 = 411
411 ÷ 450 = 0.9133333333333333
0.9133333333333333 x 100 = 91.33%