-52.5% is the change from 1000 to 475
Calculation steps:
[( 475 - 1000 ) ÷ 1000] x 100 = -52.5%
Formula
Percentage change = [(475 - 1000) / 1000] x 100
Subtract the new number by the original number
475 - 1000 = -525
-525 ÷ 1000 = -0.525
-0.525 x 100 = -52.5%