-49.5% is the change from 501 to 253
Calculation steps:
[( 253 - 501 ) ÷ 501] x 100 = -49.5%
Formula
Percentage change = [(253 - 501) / 501] x 100
Subtract the new number by the original number
253 - 501 = -248
-248 ÷ 501 = -0.49500998003992014
-0.49500998003992014 x 100 = -49.5%