-33.47% is the change from 965 to 642
Calculation steps:
[( 642 - 965 ) ÷ 965] x 100 = -33.47%
Formula
Percentage change = [(642 - 965) / 965] x 100
Subtract the new number by the original number
642 - 965 = -323
-323 ÷ 965 = -0.33471502590673574
-0.33471502590673574 x 100 = -33.47%