-90.32% is the change from 506 to 49
Calculation steps:
[( 49 - 506 ) ÷ 506] x 100 = -90.32%
Formula
Percentage change = [(49 - 506) / 506] x 100
Subtract the new number by the original number
49 - 506 = -457
-457 ÷ 506 = -0.9031620553359684
-0.9031620553359684 x 100 = -90.32%