-0.15% is the change from 663 to 662
Calculation steps:
[( 662 - 663 ) ÷ 663] x 100 = -0.15%
Formula
Percentage change = [(662 - 663) / 663] x 100
Subtract the new number by the original number
662 - 663 = -1
-1 ÷ 663 = -0.0015082956259426848
-0.0015082956259426848 x 100 = -0.15%