-49.18% is the change from 488 to 248
Calculation steps:
[( 248 - 488 ) ÷ 488] x 100 = -49.18%
Formula
Percentage change = [(248 - 488) / 488] x 100
Subtract the new number by the original number
248 - 488 = -240
-240 ÷ 488 = -0.4918032786885246
-0.4918032786885246 x 100 = -49.18%