-1.82% is the change from 990 to 972
Calculation steps:
[( 972 - 990 ) ÷ 990] x 100 = -1.82%
Formula
Percentage change = [(972 - 990) / 990] x 100
Subtract the new number by the original number
972 - 990 = -18
-18 ÷ 990 = -0.01818181818181818
-0.01818181818181818 x 100 = -1.82%