-7.89% is the change from 697 to 642
Calculation steps:
[( 642 - 697 ) ÷ 697] x 100 = -7.89%
Formula
Percentage change = [(642 - 697) / 697] x 100
Subtract the new number by the original number
642 - 697 = -55
-55 ÷ 697 = -0.07890961262553801
-0.07890961262553801 x 100 = -7.89%