-10.46% is the change from 717 to 642
Calculation steps:
[( 642 - 717 ) ÷ 717] x 100 = -10.46%
Formula
Percentage change = [(642 - 717) / 717] x 100
Subtract the new number by the original number
642 - 717 = -75
-75 ÷ 717 = -0.10460251046025104
-0.10460251046025104 x 100 = -10.46%