-9.11% is the change from 977 to 888
Calculation steps:
[( 888 - 977 ) ÷ 977] x 100 = -9.11%
Formula
Percentage change = [(888 - 977) / 977] x 100
Subtract the new number by the original number
888 - 977 = -89
-89 ÷ 977 = -0.09109518935516889
-0.09109518935516889 x 100 = -9.11%