-10.71% is the change from 308 to 275
Calculation steps:
[( 275 - 308 ) ÷ 308] x 100 = -10.71%
Formula
Percentage change = [(275 - 308) / 308] x 100
Subtract the new number by the original number
275 - 308 = -33
-33 ÷ 308 = -0.10714285714285714
-0.10714285714285714 x 100 = -10.71%