-35.2% is the change from 1000 to 648
Calculation steps:
[( 648 - 1000 ) ÷ 1000] x 100 = -35.2%
Formula
Percentage change = [(648 - 1000) / 1000] x 100
Subtract the new number by the original number
648 - 1000 = -352
-352 ÷ 1000 = -0.352
-0.352 x 100 = -35.2%