公式下图
=IF(B2=0,5,IF($B$6=B2,2.5,IF(B2>$B$6*0.1%,-0.1,0.1)))
=AVERAGEA(B2:B5)
=2.5+if(a1>=average(a1:a4),1,-1)*(average(a1:a4)-a1)/a1/0.1%*0.1