0.4% is the change from 993 to 997
Calculation steps:
[( 997 - 993 ) ÷ 993] x 100 = 0.4%
Formula
Percentage change = [(997 - 993) / 993] x 100
Subtract the new number by the original number
997 - 993 = 4
4 ÷ 993 = 0.004028197381671702
0.004028197381671702 x 100 = 0.4%