How I can increase Order response rate?

[mortalalive]

Recently I have noticed that my order response rate decreasing automatically. I have delivered my all job on time and when client message me on order page I have respond very quickly. I haven't find any reason for decreasing the order response rate. Tomorrow it was 71% now it's 68. Can any one please say me what is the actual reason for decreasing the order response rate and How I can fix it?

[mahmud_nabi]

Order response rate depends on your answered order messages and buyers request revisions within 24 hours.