-7.88% is the change from 888 to 818
Calculation steps:
[( 818 - 888 ) ÷ 888] x 100 = -7.88%
Formula
Percentage change = [(818 - 888) / 888] x 100
Subtract the new number by the original number
818 - 888 = -70
-70 ÷ 888 = -0.07882882882882883
-0.07882882882882883 x 100 = -7.88%