-50.92% is the change from 652 to 320
Calculation steps:
[( 320 - 652 ) ÷ 652] x 100 = -50.92%
Formula
Percentage change = [(320 - 652) / 652] x 100
Subtract the new number by the original number
320 - 652 = -332
-332 ÷ 652 = -0.50920245398773
-0.50920245398773 x 100 = -50.92%