-92.95% is the change from 809 to 57
Calculation steps:
[( 57 - 809 ) ÷ 809] x 100 = -92.95%
Formula
Percentage change = [(57 - 809) / 809] x 100
Subtract the new number by the original number
57 - 809 = -752
-752 ÷ 809 = -0.9295426452410384
-0.9295426452410384 x 100 = -92.95%