-44.55% is the change from 918 to 509
Calculation steps:
[( 509 - 918 ) ÷ 918] x 100 = -44.55%
Formula
Percentage change = [(509 - 918) / 918] x 100
Subtract the new number by the original number
509 - 918 = -409
-409 ÷ 918 = -0.4455337690631808
-0.4455337690631808 x 100 = -44.55%