-52.84% is the change from 827 to 390
Calculation steps:
[( 390 - 827 ) ÷ 827] x 100 = -52.84%
Formula
Percentage change = [(390 - 827) / 827] x 100
Subtract the new number by the original number
390 - 827 = -437
-437 ÷ 827 = -0.528415961305925
-0.528415961305925 x 100 = -52.84%