-69.2% is the change from 1000 to 308
Calculation steps:
[( 308 - 1000 ) ÷ 1000] x 100 = -69.2%
Formula
Percentage change = [(308 - 1000) / 1000] x 100
Subtract the new number by the original number
308 - 1000 = -692
-692 ÷ 1000 = -0.692
-0.692 x 100 = -69.2%