-47.14% is the change from 963 to 509
Calculation steps:
[( 509 - 963 ) ÷ 963] x 100 = -47.14%
Formula
Percentage change = [(509 - 963) / 963] x 100
Subtract the new number by the original number
509 - 963 = -454
-454 ÷ 963 = -0.4714434060228453
-0.4714434060228453 x 100 = -47.14%