-31.33% is the change from 466 to 320
Calculation steps:
[( 320 - 466 ) ÷ 466] x 100 = -31.33%
Formula
Percentage change = [(320 - 466) / 466] x 100
Subtract the new number by the original number
320 - 466 = -146
-146 ÷ 466 = -0.3133047210300429
-0.3133047210300429 x 100 = -31.33%