-77.58% is the change from 990 to 222
Calculation steps:
[( 222 - 990 ) ÷ 990] x 100 = -77.58%
Formula
Percentage change = [(222 - 990) / 990] x 100
Subtract the new number by the original number
222 - 990 = -768
-768 ÷ 990 = -0.7757575757575758
-0.7757575757575758 x 100 = -77.58%