-51.03% is the change from 827 to 405
Calculation steps:
[( 405 - 827 ) ÷ 827] x 100 = -51.03%
Formula
Percentage change = [(405 - 827) / 827] x 100
Subtract the new number by the original number
405 - 827 = -422
-422 ÷ 827 = -0.5102781136638452
-0.5102781136638452 x 100 = -51.03%