-3.67% is the change from 818 to 788
Calculation steps:
[( 788 - 818 ) ÷ 818] x 100 = -3.67%
Formula
Percentage change = [(788 - 818) / 818] x 100
Subtract the new number by the original number
788 - 818 = -30
-30 ÷ 818 = -0.03667481662591687
-0.03667481662591687 x 100 = -3.67%