-6.94% is the change from 288 to 268
Calculation steps:
[( 268 - 288 ) ÷ 288] x 100 = -6.94%
Formula
Percentage change = [(268 - 288) / 288] x 100
Subtract the new number by the original number
268 - 288 = -20
-20 ÷ 288 = -0.06944444444444445
-0.06944444444444445 x 100 = -6.94%