-1.3% is the change from 997 to 984
Calculation steps:
[( 984 - 997 ) ÷ 997] x 100 = -1.3%
Formula
Percentage change = [(984 - 997) / 997] x 100
Subtract the new number by the original number
984 - 997 = -13
-13 ÷ 997 = -0.013039117352056168
-0.013039117352056168 x 100 = -1.3%