-1.5% is the change from 998 to 983
Calculation steps:
[( 983 - 998 ) ÷ 998] x 100 = -1.5%
Formula
Percentage change = [(983 - 998) / 998] x 100
Subtract the new number by the original number
983 - 998 = -15
-15 ÷ 998 = -0.01503006012024048
-0.01503006012024048 x 100 = -1.5%