-18.89% is the change from 397 to 322
Calculation steps:
[( 322 - 397 ) ÷ 397] x 100 = -18.89%
Formula
Percentage change = [(322 - 397) / 397] x 100
Subtract the new number by the original number
322 - 397 = -75
-75 ÷ 397 = -0.1889168765743073
-0.1889168765743073 x 100 = -18.89%