function pD = percentDiff(limit,speedM)
pD=100*(speedM-limit)/limit;
end
Not sure what you want for good percentage difference. Do you want 'good' to be <limit (negative %diff) or <-valve? Then,
function [pD,tf] = percentDiff(limit,speedM,value)
pD=100*(speedM-limit)/limit;
tf=pD<-value;%good would be value of 1 in the tf vector
end
