-7.88% is the change from 977 to 900
Calculation steps:
[( 900 - 977 ) ÷ 977] x 100 = -7.88%
Formula
Percentage change = [(900 - 977) / 977] x 100
Subtract the new number by the original number
900 - 977 = -77
-77 ÷ 977 = -0.07881269191402251
-0.07881269191402251 x 100 = -7.88%