-25% is the change from 304 to 228
Calculation steps:
[( 228 - 304 ) ÷ 304] x 100 = -25%
Formula
Percentage change = [(228 - 304) / 304] x 100
Subtract the new number by the original number
228 - 304 = -76
-76 ÷ 304 = -0.25
-0.25 x 100 = -25%
Example