-90.61% is the change from 511 to 48
Calculation steps:
[( 48 - 511 ) ÷ 511] x 100 = -90.61%
Formula
Percentage change = [(48 - 511) / 511] x 100
Subtract the new number by the original number
48 - 511 = -463
-463 ÷ 511 = -0.9060665362035225
-0.9060665362035225 x 100 = -90.61%