-8.15% is the change from 699 to 642
Calculation steps:
[( 642 - 699 ) ÷ 699] x 100 = -8.15%
Formula
Percentage change = [(642 - 699) / 699] x 100
Subtract the new number by the original number
642 - 699 = -57
-57 ÷ 699 = -0.0815450643776824
-0.0815450643776824 x 100 = -8.15%