-28.5% is the change from 1000 to 715
Calculation steps:
[( 715 - 1000 ) ÷ 1000] x 100 = -28.5%
Formula
Percentage change = [(715 - 1000) / 1000] x 100
Subtract the new number by the original number
715 - 1000 = -285
-285 ÷ 1000 = -0.285
-0.285 x 100 = -28.5%