-89.06% is the change from 320 to 35
Calculation steps:
[( 35 - 320 ) ÷ 320] x 100 = -89.06%
Formula
Percentage change = [(35 - 320) / 320] x 100
Subtract the new number by the original number
35 - 320 = -285
-285 ÷ 320 = -0.890625
-0.890625 x 100 = -89.06%