-51.17% is the change from 981 to 479
Calculation steps:
[( 479 - 981 ) ÷ 981] x 100 = -51.17%
Formula
Percentage change = [(479 - 981) / 981] x 100
Subtract the new number by the original number
479 - 981 = -502
-502 ÷ 981 = -0.5117227319062182
-0.5117227319062182 x 100 = -51.17%