-88.53% is the change from 497 to 57
Calculation steps:
[( 57 - 497 ) ÷ 497] x 100 = -88.53%
Formula
Percentage change = [(57 - 497) / 497] x 100
Subtract the new number by the original number
57 - 497 = -440
-440 ÷ 497 = -0.8853118712273642
-0.8853118712273642 x 100 = -88.53%