-68.17% is the change from 977 to 311
Calculation steps:
[( 311 - 977 ) ÷ 977] x 100 = -68.17%
Formula
Percentage change = [(311 - 977) / 977] x 100
Subtract the new number by the original number
311 - 977 = -666
-666 ÷ 977 = -0.6816786079836233
-0.6816786079836233 x 100 = -68.17%