-41.06% is the change from 979 to 577
Calculation steps:
[( 577 - 979 ) ÷ 979] x 100 = -41.06%
Formula
Percentage change = [(577 - 979) / 979] x 100
Subtract the new number by the original number
577 - 979 = -402
-402 ÷ 979 = -0.41062308478038817
-0.41062308478038817 x 100 = -41.06%