-82.25% is the change from 828 to 147
Calculation steps:
[( 147 - 828 ) ÷ 828] x 100 = -82.25%
Formula
Percentage change = [(147 - 828) / 828] x 100
Subtract the new number by the original number
147 - 828 = -681
-681 ÷ 828 = -0.822463768115942
-0.822463768115942 x 100 = -82.25%