-64.6% is the change from 1000 to 354
Calculation steps:
[( 354 - 1000 ) ÷ 1000] x 100 = -64.6%
Formula
Percentage change = [(354 - 1000) / 1000] x 100
Subtract the new number by the original number
354 - 1000 = -646
-646 ÷ 1000 = -0.646
-0.646 x 100 = -64.6%