-8.45% is the change from 698 to 639
Calculation steps:
[( 639 - 698 ) ÷ 698] x 100 = -8.45%
Formula
Percentage change = [(639 - 698) / 698] x 100
Subtract the new number by the original number
639 - 698 = -59
-59 ÷ 698 = -0.08452722063037249
-0.08452722063037249 x 100 = -8.45%