-45.4% is the change from 1000 to 546
Calculation steps:
[( 546 - 1000 ) ÷ 1000] x 100 = -45.4%
Formula
Percentage change = [(546 - 1000) / 1000] x 100
Subtract the new number by the original number
546 - 1000 = -454
-454 ÷ 1000 = -0.454
-0.454 x 100 = -45.4%