-68.68% is the change from 977 to 306
Calculation steps:
[( 306 - 977 ) ÷ 977] x 100 = -68.68%
Formula
Percentage change = [(306 - 977) / 977] x 100
Subtract the new number by the original number
306 - 977 = -671
-671 ÷ 977 = -0.6867963152507677
-0.6867963152507677 x 100 = -68.68%