97.56% is the change from 451 to 891
Calculation steps:
[( 891 - 451 ) ÷ 451] x 100 = 97.56%
Formula
Percentage change = [(891 - 451) / 451] x 100
Subtract the new number by the original number
891 - 451 = 440
440 ÷ 451 = 0.975609756097561
0.975609756097561 x 100 = 97.56%