121.73% is the change from 451 to 1000
Calculation steps:
[( 1000 - 451 ) ÷ 451] x 100 = 121.73%
Formula
Percentage change = [(1000 - 451) / 451] x 100
Subtract the new number by the original number
1000 - 451 = 549
549 ÷ 451 = 1.2172949002217295
1.2172949002217295 x 100 = 121.73%