2.05% is the change from 977 to 997
Calculation steps:
[( 997 - 977 ) ÷ 977] x 100 = 2.05%
Formula
Percentage change = [(997 - 977) / 977] x 100
Subtract the new number by the original number
997 - 977 = 20
20 ÷ 977 = 0.02047082906857728
0.02047082906857728 x 100 = 2.05%