-78.61% is the change from 977 to 209
Calculation steps:
[( 209 - 977 ) ÷ 977] x 100 = -78.61%
Formula
Percentage change = [(209 - 977) / 977] x 100
Subtract the new number by the original number
209 - 977 = -768
-768 ÷ 977 = -0.7860798362333674
-0.7860798362333674 x 100 = -78.61%