-54.29% is the change from 991 to 453
Calculation steps:
[( 453 - 991 ) ÷ 991] x 100 = -54.29%
Formula
Percentage change = [(453 - 991) / 991] x 100
Subtract the new number by the original number
453 - 991 = -538
-538 ÷ 991 = -0.5428859737638748
-0.5428859737638748 x 100 = -54.29%