-37.56% is the change from 828 to 517
Calculation steps:
[( 517 - 828 ) ÷ 828] x 100 = -37.56%
Formula
Percentage change = [(517 - 828) / 828] x 100
Subtract the new number by the original number
517 - 828 = -311
-311 ÷ 828 = -0.3756038647342995
-0.3756038647342995 x 100 = -37.56%