-85.31% is the change from 320 to 47
Calculation steps:
[( 47 - 320 ) ÷ 320] x 100 = -85.31%
Formula
Percentage change = [(47 - 320) / 320] x 100
Subtract the new number by the original number
47 - 320 = -273
-273 ÷ 320 = -0.853125
-0.853125 x 100 = -85.31%