-92.56% is the change from 457 to 34
Calculation steps:
[( 34 - 457 ) ÷ 457] x 100 = -92.56%
Formula
Percentage change = [(34 - 457) / 457] x 100
Subtract the new number by the original number
34 - 457 = -423
-423 ÷ 457 = -0.925601750547046
-0.925601750547046 x 100 = -92.56%