-79.57% is the change from 979 to 200
Calculation steps:
[( 200 - 979 ) ÷ 979] x 100 = -79.57%
Formula
Percentage change = [(200 - 979) / 979] x 100
Subtract the new number by the original number
200 - 979 = -779
-779 ÷ 979 = -0.7957099080694586
-0.7957099080694586 x 100 = -79.57%