-93.94% is the change from 990 to 60
Calculation steps:
[( 60 - 990 ) ÷ 990] x 100 = -93.94%
Formula
Percentage change = [(60 - 990) / 990] x 100
Subtract the new number by the original number
60 - 990 = -930
-930 ÷ 990 = -0.9393939393939394
-0.9393939393939394 x 100 = -93.94%