-38.86% is the change from 826 to 505
Calculation steps:
[( 505 - 826 ) ÷ 826] x 100 = -38.86%
Formula
Percentage change = [(505 - 826) / 826] x 100
Subtract the new number by the original number
505 - 826 = -321
-321 ÷ 826 = -0.38861985472154964
-0.38861985472154964 x 100 = -38.86%