-7.27% is the change from 990 to 918
Calculation steps:
[( 918 - 990 ) ÷ 990] x 100 = -7.27%
Formula
Percentage change = [(918 - 990) / 990] x 100
Subtract the new number by the original number
918 - 990 = -72
-72 ÷ 990 = -0.07272727272727272
-0.07272727272727272 x 100 = -7.27%