-47.51% is the change from 964 to 506
Calculation steps:
[( 506 - 964 ) ÷ 964] x 100 = -47.51%
Formula
Percentage change = [(506 - 964) / 964] x 100
Subtract the new number by the original number
506 - 964 = -458
-458 ÷ 964 = -0.475103734439834
-0.475103734439834 x 100 = -47.51%