-38.81% is the change from 827 to 506
Calculation steps:
[( 506 - 827 ) ÷ 827] x 100 = -38.81%
Formula
Percentage change = [(506 - 827) / 827] x 100
Subtract the new number by the original number
506 - 827 = -321
-321 ÷ 827 = -0.38814993954050786
-0.38814993954050786 x 100 = -38.81%