-32.29% is the change from 319 to 216
Calculation steps:
[( 216 - 319 ) ÷ 319] x 100 = -32.29%
Formula
Percentage change = [(216 - 319) / 319] x 100
Subtract the new number by the original number
216 - 319 = -103
-103 ÷ 319 = -0.322884012539185
-0.322884012539185 x 100 = -32.29%