-82.34% is the change from 685 to 121
Calculation steps:
[( 121 - 685 ) ÷ 685] x 100 = -82.34%
Formula
Percentage change = [(121 - 685) / 685] x 100
Subtract the new number by the original number
121 - 685 = -564
-564 ÷ 685 = -0.8233576642335766
-0.8233576642335766 x 100 = -82.34%