-5.36% is the change from 280 to 265
Calculation steps:
[( 265 - 280 ) ÷ 280] x 100 = -5.36%
Formula
Percentage change = [(265 - 280) / 280] x 100
Subtract the new number by the original number
265 - 280 = -15
-15 ÷ 280 = -0.05357142857142857
-0.05357142857142857 x 100 = -5.36%