-49.21% is the change from 508 to 258
Calculation steps:
[( 258 - 508 ) ÷ 508] x 100 = -49.21%
Formula
Percentage change = [(258 - 508) / 508] x 100
Subtract the new number by the original number
258 - 508 = -250
-250 ÷ 508 = -0.4921259842519685
-0.4921259842519685 x 100 = -49.21%