-47.03% is the change from 961 to 509
Calculation steps:
[( 509 - 961 ) ÷ 961] x 100 = -47.03%
Formula
Percentage change = [(509 - 961) / 961] x 100
Subtract the new number by the original number
509 - 961 = -452
-452 ÷ 961 = -0.4703433922996878
-0.4703433922996878 x 100 = -47.03%