-88.75% is the change from 320 to 36
Calculation steps:
[( 36 - 320 ) ÷ 320] x 100 = -88.75%
Formula
Percentage change = [(36 - 320) / 320] x 100
Subtract the new number by the original number
36 - 320 = -284
-284 ÷ 320 = -0.8875
-0.8875 x 100 = -88.75%