-92.21% is the change from 321 to 25
Calculation steps:
[( 25 - 321 ) ÷ 321] x 100 = -92.21%
Formula
Percentage change = [(25 - 321) / 321] x 100
Subtract the new number by the original number
25 - 321 = -296
-296 ÷ 321 = -0.9221183800623053
-0.9221183800623053 x 100 = -92.21%