-6.72% is the change from 268 to 250
Calculation steps:
[( 250 - 268 ) ÷ 268] x 100 = -6.72%
Formula
Percentage change = [(250 - 268) / 268] x 100
Subtract the new number by the original number
250 - 268 = -18
-18 ÷ 268 = -0.06716417910447761
-0.06716417910447761 x 100 = -6.72%