-34.22% is the change from 488 to 321
Calculation steps:
[( 321 - 488 ) ÷ 488] x 100 = -34.22%
Formula
Percentage change = [(321 - 488) / 488] x 100
Subtract the new number by the original number
321 - 488 = -167
-167 ÷ 488 = -0.3422131147540984
-0.3422131147540984 x 100 = -34.22%