-7.2% is the change from 694 to 644
Calculation steps:
[( 644 - 694 ) ÷ 694] x 100 = -7.2%
Formula
Percentage change = [(644 - 694) / 694] x 100
Subtract the new number by the original number
644 - 694 = -50
-50 ÷ 694 = -0.07204610951008646
-0.07204610951008646 x 100 = -7.2%