-77.27% is the change from 990 to 225
Calculation steps:
[( 225 - 990 ) ÷ 990] x 100 = -77.27%
Formula
Percentage change = [(225 - 990) / 990] x 100
Subtract the new number by the original number
225 - 990 = -765
-765 ÷ 990 = -0.7727272727272727
-0.7727272727272727 x 100 = -77.27%