-49.85% is the change from 979 to 491
Calculation steps:
[( 491 - 979 ) ÷ 979] x 100 = -49.85%
Formula
Percentage change = [(491 - 979) / 979] x 100
Subtract the new number by the original number
491 - 979 = -488
-488 ÷ 979 = -0.49846782431052095
-0.49846782431052095 x 100 = -49.85%