-50.79% is the change from 827 to 407
Calculation steps:
[( 407 - 827 ) ÷ 827] x 100 = -50.79%
Formula
Percentage change = [(407 - 827) / 827] x 100
Subtract the new number by the original number
407 - 827 = -420
-420 ÷ 827 = -0.5078597339782346
-0.5078597339782346 x 100 = -50.79%