-31.46% is the change from 979 to 671
Calculation steps:
[( 671 - 979 ) ÷ 979] x 100 = -31.46%
Formula
Percentage change = [(671 - 979) / 979] x 100
Subtract the new number by the original number
671 - 979 = -308
-308 ÷ 979 = -0.3146067415730337
-0.3146067415730337 x 100 = -31.46%