-50.79% is the change from 504 to 248
Calculation steps:
[( 248 - 504 ) ÷ 504] x 100 = -50.79%
Formula
Percentage change = [(248 - 504) / 504] x 100
Subtract the new number by the original number
248 - 504 = -256
-256 ÷ 504 = -0.5079365079365079
-0.5079365079365079 x 100 = -50.79%