-5.12% is the change from 293 to 278
Calculation steps:
[( 278 - 293 ) ÷ 293] x 100 = -5.12%
Formula
Percentage change = [(278 - 293) / 293] x 100
Subtract the new number by the original number
278 - 293 = -15
-15 ÷ 293 = -0.051194539249146756
-0.051194539249146756 x 100 = -5.12%