-90.99% is the change from 977 to 88
Calculation steps:
[( 88 - 977 ) ÷ 977] x 100 = -90.99%
Formula
Percentage change = [(88 - 977) / 977] x 100
Subtract the new number by the original number
88 - 977 = -889
-889 ÷ 977 = -0.90992835209826
-0.90992835209826 x 100 = -90.99%