-79.84% is the change from 977 to 197
Calculation steps:
[( 197 - 977 ) ÷ 977] x 100 = -79.84%
Formula
Percentage change = [(197 - 977) / 977] x 100
Subtract the new number by the original number
197 - 977 = -780
-780 ÷ 977 = -0.7983623336745138
-0.7983623336745138 x 100 = -79.84%