-58.94% is the change from 828 to 340
Calculation steps:
[( 340 - 828 ) ÷ 828] x 100 = -58.94%
Formula
Percentage change = [(340 - 828) / 828] x 100
Subtract the new number by the original number
340 - 828 = -488
-488 ÷ 828 = -0.5893719806763285
-0.5893719806763285 x 100 = -58.94%