-68.23% is the change from 979 to 311
Calculation steps:
[( 311 - 979 ) ÷ 979] x 100 = -68.23%
Formula
Percentage change = [(311 - 979) / 979] x 100
Subtract the new number by the original number
311 - 979 = -668
-668 ÷ 979 = -0.6823289070480082
-0.6823289070480082 x 100 = -68.23%