-50.5% is the change from 501 to 248
Calculation steps:
[( 248 - 501 ) ÷ 501] x 100 = -50.5%
Formula
Percentage change = [(248 - 501) / 501] x 100
Subtract the new number by the original number
248 - 501 = -253
-253 ÷ 501 = -0.5049900199600799
-0.5049900199600799 x 100 = -50.5%