-61.62% is the change from 990 to 380
Calculation steps:
[( 380 - 990 ) ÷ 990] x 100 = -61.62%
Formula
Percentage change = [(380 - 990) / 990] x 100
Subtract the new number by the original number
380 - 990 = -610
-610 ÷ 990 = -0.6161616161616161
-0.6161616161616161 x 100 = -61.62%