-79.69% is the change from 980 to 199
Calculation steps:
[( 199 - 980 ) ÷ 980] x 100 = -79.69%
Formula
Percentage change = [(199 - 980) / 980] x 100
Subtract the new number by the original number
199 - 980 = -781
-781 ÷ 980 = -0.7969387755102041
-0.7969387755102041 x 100 = -79.69%