-48.87% is the change from 487 to 249
Calculation steps:
[( 249 - 487 ) ÷ 487] x 100 = -48.87%
Formula
Percentage change = [(249 - 487) / 487] x 100
Subtract the new number by the original number
249 - 487 = -238
-238 ÷ 487 = -0.4887063655030801
-0.4887063655030801 x 100 = -48.87%