-7.1% is the change from 690 to 641
Calculation steps:
[( 641 - 690 ) ÷ 690] x 100 = -7.1%
Formula
Percentage change = [(641 - 690) / 690] x 100
Subtract the new number by the original number
641 - 690 = -49
-49 ÷ 690 = -0.07101449275362319
-0.07101449275362319 x 100 = -7.1%