-40.99% is the change from 827 to 488
Calculation steps:
[( 488 - 827 ) ÷ 827] x 100 = -40.99%
Formula
Percentage change = [(488 - 827) / 827] x 100
Subtract the new number by the original number
488 - 827 = -339
-339 ÷ 827 = -0.40991535671100365
-0.40991535671100365 x 100 = -40.99%