-86.07% is the change from 323 to 45
Calculation steps:
[( 45 - 323 ) ÷ 323] x 100 = -86.07%
Formula
Percentage change = [(45 - 323) / 323] x 100
Subtract the new number by the original number
45 - 323 = -278
-278 ÷ 323 = -0.8606811145510835
-0.8606811145510835 x 100 = -86.07%