-28.62% is the change from 304 to 217
Calculation steps:
[( 217 - 304 ) ÷ 304] x 100 = -28.62%
Formula
Percentage change = [(217 - 304) / 304] x 100
Subtract the new number by the original number
217 - 304 = -87
-87 ÷ 304 = -0.28618421052631576
-0.28618421052631576 x 100 = -28.62%