-72.12% is the change from 990 to 276
Calculation steps:
[( 276 - 990 ) ÷ 990] x 100 = -72.12%
Formula
Percentage change = [(276 - 990) / 990] x 100
Subtract the new number by the original number
276 - 990 = -714
-714 ÷ 990 = -0.7212121212121212
-0.7212121212121212 x 100 = -72.12%