-90.69% is the change from 451 to 42
Calculation steps:
[( 42 - 451 ) ÷ 451] x 100 = -90.69%
Formula
Percentage change = [(42 - 451) / 451] x 100
Subtract the new number by the original number
42 - 451 = -409
-409 ÷ 451 = -0.9068736141906873
-0.9068736141906873 x 100 = -90.69%