121.56% is the change from 450 to 997
Calculation steps:
[( 997 - 450 ) ÷ 450] x 100 = 121.56%
Formula
Percentage change = [(997 - 450) / 450] x 100
Subtract the new number by the original number
997 - 450 = 547
547 ÷ 450 = 1.2155555555555555
1.2155555555555555 x 100 = 121.56%