-67.2% is the change from 997 to 327
Calculation steps:
[( 327 - 997 ) ÷ 997] x 100 = -67.2%
Formula
Percentage change = [(327 - 997) / 997] x 100
Subtract the new number by the original number
327 - 997 = -670
-670 ÷ 997 = -0.6720160481444333
-0.6720160481444333 x 100 = -67.2%