-68.78% is the change from 980 to 306
Calculation steps:
[( 306 - 980 ) ÷ 980] x 100 = -68.78%
Formula
Percentage change = [(306 - 980) / 980] x 100
Subtract the new number by the original number
306 - 980 = -674
-674 ÷ 980 = -0.6877551020408164
-0.6877551020408164 x 100 = -68.78%