-67.47% is the change from 990 to 322
Calculation steps:
[( 322 - 990 ) ÷ 990] x 100 = -67.47%
Formula
Percentage change = [(322 - 990) / 990] x 100
Subtract the new number by the original number
322 - 990 = -668
-668 ÷ 990 = -0.6747474747474748
-0.6747474747474748 x 100 = -67.47%