-61.47% is the change from 828 to 319
Calculation steps:
[( 319 - 828 ) ÷ 828] x 100 = -61.47%
Formula
Percentage change = [(319 - 828) / 828] x 100
Subtract the new number by the original number
319 - 828 = -509
-509 ÷ 828 = -0.6147342995169082
-0.6147342995169082 x 100 = -61.47%