-1.72% is the change from 990 to 973
Calculation steps:
[( 973 - 990 ) ÷ 990] x 100 = -1.72%
Formula
Percentage change = [(973 - 990) / 990] x 100
Subtract the new number by the original number
973 - 990 = -17
-17 ÷ 990 = -0.01717171717171717
-0.01717171717171717 x 100 = -1.72%