-7.17% is the change from 697 to 647
Calculation steps:
[( 647 - 697 ) ÷ 697] x 100 = -7.17%
Formula
Percentage change = [(647 - 697) / 697] x 100
Subtract the new number by the original number
647 - 697 = -50
-50 ÷ 697 = -0.07173601147776183
-0.07173601147776183 x 100 = -7.17%