-38.94% is the change from 827 to 505
Calculation steps:
[( 505 - 827 ) ÷ 827] x 100 = -38.94%
Formula
Percentage change = [(505 - 827) / 827] x 100
Subtract the new number by the original number
505 - 827 = -322
-322 ÷ 827 = -0.3893591293833132
-0.3893591293833132 x 100 = -38.94%