-90.26% is the change from 503 to 49
Calculation steps:
[( 49 - 503 ) ÷ 503] x 100 = -90.26%
Formula
Percentage change = [(49 - 503) / 503] x 100
Subtract the new number by the original number
49 - 503 = -454
-454 ÷ 503 = -0.9025844930417495
-0.9025844930417495 x 100 = -90.26%