-28.95% is the change from 304 to 216
Calculation steps:
[( 216 - 304 ) ÷ 304] x 100 = -28.95%
Formula
Percentage change = [(216 - 304) / 304] x 100
Subtract the new number by the original number
216 - 304 = -88
-88 ÷ 304 = -0.2894736842105263
-0.2894736842105263 x 100 = -28.95%