-45.97% is the change from 942 to 509
Calculation steps:
[( 509 - 942 ) ÷ 942] x 100 = -45.97%
Formula
Percentage change = [(509 - 942) / 942] x 100
Subtract the new number by the original number
509 - 942 = -433
-433 ÷ 942 = -0.4596602972399151
-0.4596602972399151 x 100 = -45.97%