-68.88% is the change from 980 to 305
Calculation steps:
[( 305 - 980 ) ÷ 980] x 100 = -68.88%
Formula
Percentage change = [(305 - 980) / 980] x 100
Subtract the new number by the original number
305 - 980 = -675
-675 ÷ 980 = -0.6887755102040817
-0.6887755102040817 x 100 = -68.88%