-30.19% is the change from 828 to 578
Calculation steps:
[( 578 - 828 ) ÷ 828] x 100 = -30.19%
Formula
Percentage change = [(578 - 828) / 828] x 100
Subtract the new number by the original number
578 - 828 = -250
-250 ÷ 828 = -0.30193236714975846
-0.30193236714975846 x 100 = -30.19%