-46.32% is the change from 950 to 510
Calculation steps:
[( 510 - 950 ) ÷ 950] x 100 = -46.32%
Formula
Percentage change = [(510 - 950) / 950] x 100
Subtract the new number by the original number
510 - 950 = -440
-440 ÷ 950 = -0.4631578947368421
-0.4631578947368421 x 100 = -46.32%