-2.14% is the change from 327 to 320
Calculation steps:
[( 320 - 327 ) ÷ 327] x 100 = -2.14%
Formula
Percentage change = [(320 - 327) / 327] x 100
Subtract the new number by the original number
320 - 327 = -7
-7 ÷ 327 = -0.021406727828746176
-0.021406727828746176 x 100 = -2.14%