-90.03% is the change from 321 to 32
Calculation steps:
[( 32 - 321 ) ÷ 321] x 100 = -90.03%
Formula
Percentage change = [(32 - 321) / 321] x 100
Subtract the new number by the original number
32 - 321 = -289
-289 ÷ 321 = -0.9003115264797508
-0.9003115264797508 x 100 = -90.03%