-6.4% is the change from 1000 to 936
Calculation steps:
[( 936 - 1000 ) ÷ 1000] x 100 = -6.4%
Formula
Percentage change = [(936 - 1000) / 1000] x 100
Subtract the new number by the original number
936 - 1000 = -64
-64 ÷ 1000 = -0.064
-0.064 x 100 = -6.4%