-48.22% is the change from 985 to 510
Calculation steps:
[( 510 - 985 ) ÷ 985] x 100 = -48.22%
Formula
Percentage change = [(510 - 985) / 985] x 100
Subtract the new number by the original number
510 - 985 = -475
-475 ÷ 985 = -0.48223350253807107
-0.48223350253807107 x 100 = -48.22%