-33.23% is the change from 322 to 215
Calculation steps:
[( 215 - 322 ) ÷ 322] x 100 = -33.23%
Formula
Percentage change = [(215 - 322) / 322] x 100
Subtract the new number by the original number
215 - 322 = -107
-107 ÷ 322 = -0.33229813664596275
-0.33229813664596275 x 100 = -33.23%