-40.85% is the change from 918 to 543
Calculation steps:
[( 543 - 918 ) ÷ 918] x 100 = -40.85%
Formula
Percentage change = [(543 - 918) / 918] x 100
Subtract the new number by the original number
543 - 918 = -375
-375 ÷ 918 = -0.4084967320261438
-0.4084967320261438 x 100 = -40.85%