-79.63% is the change from 977 to 199
Calculation steps:
[( 199 - 977 ) ÷ 977] x 100 = -79.63%
Formula
Percentage change = [(199 - 977) / 977] x 100
Subtract the new number by the original number
199 - 977 = -778
-778 ÷ 977 = -0.7963152507676561
-0.7963152507676561 x 100 = -79.63%