-10.86% is the change from 359 to 320
Calculation steps:
[( 320 - 359 ) ÷ 359] x 100 = -10.86%
Formula
Percentage change = [(320 - 359) / 359] x 100
Subtract the new number by the original number
320 - 359 = -39
-39 ÷ 359 = -0.10863509749303621
-0.10863509749303621 x 100 = -10.86%