-62.56% is the change from 828 to 310
Calculation steps:
[( 310 - 828 ) ÷ 828] x 100 = -62.56%
Formula
Percentage change = [(310 - 828) / 828] x 100
Subtract the new number by the original number
310 - 828 = -518
-518 ÷ 828 = -0.6256038647342995
-0.6256038647342995 x 100 = -62.56%