-4% is the change from 300 to 288
Calculation steps:
[( 288 - 300 ) ÷ 300] x 100 = -4%
Formula
Percentage change = [(288 - 300) / 300] x 100
Subtract the new number by the original number
288 - 300 = -12
-12 ÷ 300 = -0.04
-0.04 x 100 = -4%
Example