How to increase accuracy of the model

Hello Everyone , i hope you are doing well.

I have the dataset attached the dataset

I am using Neural Net Pattern Recognition App to train the model.

i have trained the model and achieve 75% accuracy i want to improve the accuracy there is only one option which is increase the number of neurons in the hiddent layers.

What i can do to increase the accuracy

[yanqi liu]

yes，sir，what rate to split data as train、test？is it all data to train and test？

[Med Future]

@yanqi liu 70 15 and 15

[Med Future]

@yanqi liu It performance is very poor what can i do to increase it?