-38.08% is the change from 990 to 613
Calculation steps:
[( 613 - 990 ) ÷ 990] x 100 = -38.08%
Formula
Percentage change = [(613 - 990) / 990] x 100
Subtract the new number by the original number
613 - 990 = -377
-377 ÷ 990 = -0.3808080808080808
-0.3808080808080808 x 100 = -38.08%