The chart is based on the RDA (recommended dietary allowance). I personally disagree with the RDA's chart. I think it is outdated and biased because of the government agencies that set those recommendations.
Everyone is different so what works for some may not work for others.
This is my chart so far for today. I have used 436 calories and the chart says I am at 100% of my protein intake for today. I disagree since I am only at 46 grams of protein. I will take in twice that or more by the end of the day while keeping my macro's about the same as what they are now. That is ideal for me because I feel and look much healthier eating higher protein/fat, lower carbs.