What percent of monkey β-globin amino acids are identical to the human sequence? (this is called the percent identity between the monkey and human β-globin

It is 94.5% that the monkey β - globin amino acids are identical to the human sequence.  Gibbons are more closely related to humans than monkeys are because the gibbon β - globin sequence is a closer match with the βhuman sequence. The gibbons, monkeys, and human have what you called amino acid sequence of other proteins.