-86.57% is the change from 990 to 133
Calculation steps:
[( 133 - 990 ) ÷ 990] x 100 = -86.57%
Formula
Percentage change = [(133 - 990) / 990] x 100
Subtract the new number by the original number
133 - 990 = -857
-857 ÷ 990 = -0.8656565656565657
-0.8656565656565657 x 100 = -86.57%