-94.44% is the change from 990 to 55
Calculation steps:
[( 55 - 990 ) ÷ 990] x 100 = -94.44%
Formula
Percentage change = [(55 - 990) / 990] x 100
Subtract the new number by the original number
55 - 990 = -935
-935 ÷ 990 = -0.9444444444444444
-0.9444444444444444 x 100 = -94.44%