-6.07% is the change from 280 to 263
Calculation steps:
[( 263 - 280 ) ÷ 280] x 100 = -6.07%
Formula
Percentage change = [(263 - 280) / 280] x 100
Subtract the new number by the original number
263 - 280 = -17
-17 ÷ 280 = -0.060714285714285714
-0.060714285714285714 x 100 = -6.07%