-37.32% is the change from 828 to 519
Calculation steps:
[( 519 - 828 ) ÷ 828] x 100 = -37.32%
Formula
Percentage change = [(519 - 828) / 828] x 100
Subtract the new number by the original number
519 - 828 = -309
-309 ÷ 828 = -0.37318840579710144
-0.37318840579710144 x 100 = -37.32%