-67.82% is the change from 979 to 315
Calculation steps:
[( 315 - 979 ) ÷ 979] x 100 = -67.82%
Formula
Percentage change = [(315 - 979) / 979] x 100
Subtract the new number by the original number
315 - 979 = -664
-664 ÷ 979 = -0.6782431052093973
-0.6782431052093973 x 100 = -67.82%