-90.8% is the change from 500 to 46
Calculation steps:
[( 46 - 500 ) ÷ 500] x 100 = -90.8%
Formula
Percentage change = [(46 - 500) / 500] x 100
Subtract the new number by the original number
46 - 500 = -454
-454 ÷ 500 = -0.908
-0.908 x 100 = -90.8%
Example