-94.69% is the change from 320 to 17
Calculation steps:
[( 17 - 320 ) ÷ 320] x 100 = -94.69%
Formula
Percentage change = [(17 - 320) / 320] x 100
Subtract the new number by the original number
17 - 320 = -303
-303 ÷ 320 = -0.946875
-0.946875 x 100 = -94.69%