-67.84% is the change from 998 to 321
Calculation steps:
[( 321 - 998 ) ÷ 998] x 100 = -67.84%
Formula
Percentage change = [(321 - 998) / 998] x 100
Subtract the new number by the original number
321 - 998 = -677
-677 ÷ 998 = -0.6783567134268537
-0.6783567134268537 x 100 = -67.84%