-54.76% is the change from 997 to 451
Calculation steps:
[( 451 - 997 ) ÷ 997] x 100 = -54.76%
Formula
Percentage change = [(451 - 997) / 997] x 100
Subtract the new number by the original number
451 - 997 = -546
-546 ÷ 997 = -0.5476429287863591
-0.5476429287863591 x 100 = -54.76%