-92.81% is the change from 320 to 23
Calculation steps:
[( 23 - 320 ) ÷ 320] x 100 = -92.81%
Formula
Percentage change = [(23 - 320) / 320] x 100
Subtract the new number by the original number
23 - 320 = -297
-297 ÷ 320 = -0.928125
-0.928125 x 100 = -92.81%