-48.33% is the change from 989 to 511
Calculation steps:
[( 511 - 989 ) ÷ 989] x 100 = -48.33%
Formula
Percentage change = [(511 - 989) / 989] x 100
Subtract the new number by the original number
511 - 989 = -478
-478 ÷ 989 = -0.4833164812942366
-0.4833164812942366 x 100 = -48.33%