-48.51% is the change from 503 to 259
Calculation steps:
[( 259 - 503 ) ÷ 503] x 100 = -48.51%
Formula
Percentage change = [(259 - 503) / 503] x 100
Subtract the new number by the original number
259 - 503 = -244
-244 ÷ 503 = -0.4850894632206759
-0.4850894632206759 x 100 = -48.51%