-64.14% is the change from 990 to 355
Calculation steps:
[( 355 - 990 ) ÷ 990] x 100 = -64.14%
Formula
Percentage change = [(355 - 990) / 990] x 100
Subtract the new number by the original number
355 - 990 = -635
-635 ÷ 990 = -0.6414141414141414
-0.6414141414141414 x 100 = -64.14%