-43.12% is the change from 909 to 517
Calculation steps:
[( 517 - 909 ) ÷ 909] x 100 = -43.12%
Formula
Percentage change = [(517 - 909) / 909] x 100
Subtract the new number by the original number
517 - 909 = -392
-392 ÷ 909 = -0.4312431243124312
-0.4312431243124312 x 100 = -43.12%